Friday, April 10, 2009
Magdalenian artifacts found in Scotland
Flint tools have been discovered near Biggar, South Lanarkshire, Scotland. They are very similar to the ones used in the Netherlands and Northern Germany c. 14-12,000 years ago, in the Magdalenian period. This suggests that their users could have originated in that area and crossed through what is now the North Sea, then above sea level (Doggerland).
If the datation could be confirmed, it would mean pushing back the earliest known inhabitation of Scotland by humans more than 3000 years. Before this finding the oldest known human settlements in the country were dated to c. 8500 BP, in the Epipaleolithic period.
Source: BBC.
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Labels:
Magdalenian,
Scotland,
Upper Paleolithic
Note: preliminary mtDNA timeline
After squeezing my neurones for many days I have found a reasonable (albeit still hypothetical) timeline for Eurasian mtDNA based on SNP count. I have used a very simplified tree/sequence, that focuses in West Eurasian lineages, as these are the easiest ones to match with the known archaeo-cultural record, at least for me.
I used the mtDNA tree at PhyloTree.org as reference because it seems best kept and updated.
L3>>>>M>N>>R>>R0>HV/U>>H/U6/U8>>>U5>>>>U5a>>K>T/W>K1/K2>>>>>>>>"present"
Obviously this sequence is not a genealogical tree but a mere lineal count of some representative nodes (epysodes) in the Eurasian genetic tree. The different lineages have been blended in a single "temporal" line for working purposes only. Each ">" symbol represents 1SNP in relation to the previous node and to the general L3 node (that includes all Eurasian plus some African mtDNA).
Of course, my assumption is that each SNP should represent an approximately similar period of time in the evolution of the Eurasian mtDNA.
"Present" is considered here by taking some well studied K subclade. I decided to use it after preliminary attempts made modern K sublineages to be well "in the future". At this stage it has not be contrasted with other lineages, what may produce some relevant fine tuning later on.
I tried hard (I swear) to make the H "explosion" fit with Gravettian but that only pushed R0 and U too late into the UP, and made the M,N,R "supernode" to be also incredibly too recent. Also contemporary U6 and U8 are way too likely to be of Aurignacian (Dabban in the case of U6) times. So the H/U6/U8 is here fixed to 41,000 BP, being the other reference point.
The results are (rounded to the nearest milennium):
·L3 67 kya
·M 59 kya
·N 56 kya [9 M sublineages]
·R 52 kya [D, M14, M30, M36]
·R0 48 kya [G, M8, M43, M45]
·U/HV 45 kya [CZ, M31, M34, M39, M48, N2, B, R9]
·H/U6/U8 41 kya (assumed) [Q, N9a, N9b, U2, HV0, R5, R8]
·U5 34 kya [M1, M28, U6b'd, U8b'K]
·U5a 26 kya [M32, R0a,U6a, U7]
·K 21 kya [M21, M22, U4]
·T/W 19 kya [N2a, R11, U6c]
·K1/K2 17 kya
Likely contemporary nodes not directly considered are listed in [brackets] for reference. Not all other major lineages/nodes are coincident with the ones considered here; the ones listed are just for a quick reference of the wider Eurasian picture.
Notice that D and G are listed among the oldest East Asian nodes to branch and they are also the ones considered oldest in Central Asia (derived subclades, not considered), what suggests that the oldest colonization of this region had an Oriental origin.
Overall the impression is that:
1. The "fast coastal migration" scenario, via Bab el-Mandeb, seems ratified, as the dates could not fit with an older Eurasian coalescence. Would I try to force that, the H "explosion", for instance, would have to be much older than any European AMH presence, what makes absolutely no sense. This seems to contradict my previous estimates for Y-DNA, so I will have to review them.
2. When the R "explosion" happened, there were already N-lineage people in East Asia (N9) and Australia (S), and most M sublineages (16/26) had already began branching out in their respective destinations (exceptions include the only West Eurasian M sublineages: M1 and M48). This probably means that the expansion of R implies a second distinct pulse of the Eurasian expansion of AMH, I guess that associated with that of Y-DNA K.
3. AMHs arrived to West Asia and expanded there c. 48-45 kya. The later date may imply also the colonization of parts of the Balcans (Bakho-Kiro).
4. The main expansion of West Asians into Europe and North Africa happened c. 41 kya (this is presumed but should pose no problem as we know that well enough on archaeological grounds). H, U6 and U8 formed and began branching out ("exploding" in the case of H) at that time.
5. The timeline of U5 approaches that of Gravettian (original at c. 28 kya) but not well enough. It must be noted anyhow that the western expansion of Gravettian is much more recent, closer to the Solutrean origins, what gives some margin for speculation. Eastern Europe was basically colonized in this period, what explains well why U5 is more common towards the East, while H is towards the West of Europe.
6. K appears to have a Solutreo-Magdalenian time frame, what would mean that U8 as a whole, also U8b'K, probably coalesced in Europe and not in West Asia. At first I suspected that K would end up being Neolithic but, after some reality check (mutations to present), it seems not. West Asian U8b (also found in Italy) and K is therefore product of a back-migration therefore. I am at the moment uncertain but suspecting that T2 might have migrated to Europe also in this prehistorical context.
And for those who worship the TRMCA (i.e. Tandem Repeat Molecular Clock [Hypothesis] Age [Estimate]) model, I suggest them to re-read my favorite Grimm brothers' tale: The Emperor's New Clothes, which is very illustrative of what happens when people trust what they can't see, and when blind acceptance of authority on the fear of being called a fool goes mainstream, even if it's an obvious nonsense. In any case, as this estimate of mine clearly conradicts many of these elaborate guesses (even if it fits surprisingly well with known Prehistory), I'll be glad to discuss their concerns in the comments section, like always.
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Thursday, April 9, 2009
Traffic pollution causes underweight babies
Source: BBC Science & Enviroment.
Researchers from the Univeristiy of Medicine and Dentistry of New Jersey, discarded other possible factors such as smoking, race or socioeconomic background to determine that pollution, specfically pollution caused by road traffic, is a major cause of abdnormally low weight in newborns.
The risk of a small birth weight baby rose significantly with each increase in particulate matter of four micrograms per metres squared, during the first and third trimesters of pregnancy. Similarly, the risk of a very small birth weight baby rose significantly with each 10 parts per billion increase in nitrogen dioxide.
These two pollutants are emitted by motor vehicles.
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Tuesday, April 7, 2009
Stone blades already 500,000 years ago.
Found at Remote Central, original news from Science Now.
This is a most interesting news and review for those of us who are interested in the formation of Humankind. In the past blade-making abilities were considered something somehow definitory of what meant to be Homo sapiens. Eventually blade tools associated with Neanderthals were discovered too and it was also acknowledged that many Sapiens cultures did not use blades altogether anyhow. The use of this technology is anyhow quite definitory of the Upper Paleolithic of West Eurasia.
Recent research anyhow has been pushing back this technology: to 380,000 in West Asia and 300,000 in Europe. Now the record of antiquity has been beaten by a discovery in Kenya that is dated to more than 500,000 years ago (509-543,000 BP)
The revealing artifacts
It must be mentioned that H. neanderthalensis and H. sapiens are not that old, they are generally believed to be some 200,000 years old as species, maybe less in the case of H. sapiens.
So who made them? Apparently our direct ancestor Homo heidelbergensis, whose remains (sometimes described as H. rhodesiensis) have been found in the same part of the Kenyan formation. In the case of the later European blades it would be H. antecessor, the direct ancestor of Neanderthals, while it is not obvious who would be responsible for the West Asian ones, of intermediate age.
One factor that is anyhow underlined is the last dramatic expansion of brain size in the human lineage about 600,000 years ago, which may have been responsible for a major shift in human intelligence, allowing for more complex achievements among our ancestors and extinct relatives.
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Labels:
Homo heidelbergensis,
intelligence,
Kenya,
Paleolithic,
technology
Monday, April 6, 2009
Watch who you email
Another fascist EU directive requiring telecom companies to keep track of all your emails and net phone calls has become effective. Only Sweden has decided to completely ignore it while in Germany is being challenged at court.
By this method mail will not be private anymore, as the police will have ready access to the list of the people you are communicating with.
Just another courstesy of Scarecrow Productions: we get some fanatic freaks to bomb you, we frighten you and we take your freedoms all at once. The very coup that has been going on in the West and the world in general since September 11 2001, with all democratic rights being stripped once after the other and with rulers, police corps and judges being given dictator powers.
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Labels:
EU,
fascism,
human rights,
police state
Sunday, April 5, 2009
Cheap straw-made homes withstand the hardest erthquake
A most interesting developement in architecture for the people: engineer and students demonstrate that an innovative design of cheap home built mostly of straw bales can withstand earthquakes near the top of the Ritcher scale, with almost no damage.
The design is intended for the people of the Hindu Kush area, where earthquakes are common. While inspired in local techniques, the house does not use straw bales only for insulation but actually for the very structure of the building. The cimentation is made of sacks of gravel, another cheap readily available material and the walls are covered with clay plaster, similarly easy to obtain.
The result is an extremely resistent home that, subject to an extremely violent artificial earthquake survived with just a small crack in the plaster.
After the earthquake... just a crack.
The project by the University of Reno, Nevada, aims to offer cheap but earthquake-proof homes for the people of Kashmir, where recent earthquakes wroke havoc.
So good for the old brickmakers' propaganda stories: straw stands best in fact.
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Labels:
ecology,
geology,
homes,
technology
Afghanistan, as fundamentalist now as with the Taliban
It is surely not the only case but it is most outraging: Sayed Parwez Kambakhsh allegely downloaded an article in support of women's rights from the Internet and distributed it. In the morning of October 27th 2007 he was arrested. Then he was tortured and sentenced to death on the grounds of "blasphemy" (what the heck?). After some local and international outrage, and numerous protests in Afghanistan itself, the sentence was commuted to 20 years of prision and ratified by the Afghan supreme court.

Sayed Parwez Kambakhsh in prision
In Rebelión, his brother dennounces the hypocritical Western support for a regime that is full of religious fanatics, corrupt, obscurantist and totalitarian. He dennounces that the "talibanists" (as to make a difference with the armed opposition talibans) control the government in Kabul and the provinces and that all the Western intervention has done virtually nothing in favor of the human rights of the Afghan people.
I wonder if that is the reason why the USA and its NATO vassals are losing the war after all: their inability to deliver consistently with their discourse.
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Saturday, April 4, 2009
Arctic will be ice free in three decades
This is the conclussion drawn by two independent researchers from Washington state on a selection of the best models for the effects of ongoing climatic change in the Arctic. Climatlogist Muyin Wang and oceanographer James Overland selected the six best performing models on this matter (out of 23), picking only those that had been able to make good predictions for the recent past, and concluded that this (bottom half, top two are from now) is the most likely picture for March and September 2040:
Source: Science Daily.
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Labels:
Arctic,
climate change
Friday, April 3, 2009
Brief review of recent mtDNA H info
Haplogroup H (mtDNA) has been popping up at Dienekes' and Mathilda's blogs several times as of late. In order to keep a clear reference, here is the list of the papers:
1. V. Alvarez-Iglesias, A. Mosquera-Miguel et al. New Population and Phylogenetic Features of the Internal Variation within Mitochondrial DNA Macro-Haplogroup R0. PLoS-ONE, 2009. (open access)
2. H. Ennafaa, V. M Cabrera et al. Mitochondrial DNA haplogroup H structure in North Africa. BioMed Central Genetics 2009. (open access)
3. L. Cherni et al. Post-last glacial maximum expansion from Iberia to North Africa revealed by fine characterization of mtDNA H haplogroup in Tunisia. American Journal of Physical Anthropology, 2008. (abstract only - full paper behind paywall)
4. D. Caramelli et al. A 28,000 Years Old Cro-Magnon mtDNA Sequence Differs from All Potentially Contaminating Modern Sequences. PLoS-ONE, 2008. (open access)
5. H. Chandler, B. Sykes and J. Zilhao. Using ancient DNA to examine genetic continuity at the Mesolithic-Neolithic transition in Portugal. Actas del III Congreso del Neolítico en la Península Ibérica, 2005. (PDF - freely accessible)
1. V. Alvarez-Iglesias, A. Mosquera-Miguel et al. New Population and Phylogenetic Features of the Internal Variation within Mitochondrial DNA Macro-Haplogroup R0. PLoS-ONE, 2009. (open access)
2. H. Ennafaa, V. M Cabrera et al. Mitochondrial DNA haplogroup H structure in North Africa. BioMed Central Genetics 2009. (open access)
3. L. Cherni et al. Post-last glacial maximum expansion from Iberia to North Africa revealed by fine characterization of mtDNA H haplogroup in Tunisia. American Journal of Physical Anthropology, 2008. (abstract only - full paper behind paywall)
4. D. Caramelli et al. A 28,000 Years Old Cro-Magnon mtDNA Sequence Differs from All Potentially Contaminating Modern Sequences. PLoS-ONE, 2008. (open access)
5. H. Chandler, B. Sykes and J. Zilhao. Using ancient DNA to examine genetic continuity at the Mesolithic-Neolithic transition in Portugal. Actas del III Congreso del Neolítico en la Península Ibérica, 2005. (PDF - freely accessible)
Fig. 3 from paper #1
H subclades' distribution in Europe, West and Central Asia
(1) and (2) are just out of the oven and it is really nice that such important papers are open access. (1) covers Europe, West Asia and Central Asia, while (2) focuses in North Africa (with context references for West Asia and Iberia), being the perfect complement of (1), illustrating how West European H1 and H3 comprise the largest part of North African H (which in turn is 25% of all regional mtDNA). (3) is sadly behind a paywall but the main conclusion visible in the abstract: Although no signs of local expansion were detected, which would allow a clear dating of their introduction, the younger and less diverse Tunisian H1 and H3 lineages indicate Iberia as the radiating centre.
(4) is a most important research that has found CRS haplotype in the HVR-I (most likely H) in a 28,000 years old individual from Paglicci Cave, Puglia, Italy. This discovery clashes directly with he usual MCH hunches that make this subclade much recent and document that haplogroup H and at least some of its subclades were already common in the early Gravettian and are no modern developement at all. (5) is an older yet relevant paper that shows that haplogroup H was strongly dominant in both Epipaleolithic and Neolithic Portuguese, along with some U and less important clades.
Overall it seems reasonably clear that H expansion dates at least from Gravettian times (no other cultural group has been so pan-European ever) and that its expansion into North Africa suggest that Iberomaurusian (Oranian) culture was with all likehood derived from Southern Iberian Gravetto-Solutrean. It also seems very clear that the DNA "molecular clock" does not seem to be ticking at the usually speculated rythms at all.
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Update: Another paper on aDNA, including H, that I had forgotten is R. Kèfi et al. Diversité mitochondriale de la population de Taforalt (12.000 ans bp - maroc): une approche génétique a l’étude du peuplement de l’afrique du nord. Anthropologie 2005. Reviewed and translated in its essentials by Mathilda several months ago [note: previous link has gone broken but I found a Power Point direct download from Pasteur Institut]. The HVS-I haplotype sequencing of 23 bone remains from Taforalt cave, Morocco, yielded the following results:
· H or U (CRS, most likely all H): 11 (47.8%)
· H (not CRS): 4 (17.4%)
· JT: 3 (13%)
· U6: 2 (8.7%)
· V: 2 (8.7%)
· L3, M or N: 1 (4.3%)
JT means JT(xJ,xT), a very rare finding, exclusive nowadays of North Africa and Italy. The authors mention that this same mtDNA pool is the one found among modern Notheren Moroccan Berbers who live in that same area.
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Labels:
European genetics,
mtDNA,
North Africa,
West Eurasia
USA: one out of ten citizens surviving on food stamps
32.2 million people in the USA (10% of the population) are living on food stamps, the rationing method used in the North American republic to keep starvation at bay. Unemployed able to claim benefits are now another almost six million, reports Al Jazeera. Yet another 3% of the population is in jail or probation, as noticed in Genes and Demons. The various figures of the marginated may overlap somewhat, I guess but we are anyhow talking of a marginalized population approaching maybe 15% of all US-Americans.
And the trend, sadly, does not look like reverting any time soon.
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Labels:
class war,
The Crisis,
USA
Wednesday, April 1, 2009
Y-DNA timeline (4) - comparison with climatic data
In the second post of this mini-series, I suggested to do some fine tuning experiments in regard with my Y-DNA timeline analysis, by comparing the general graph (which shows pattern and proportions) with actual climatic data.
I have done some of it, mirroring the glaciar climatic data in order to make it fit with the left to right orientation of my graph, and stretching it at different escales until it fit as well as I could figure with the apparent demic expansions' pattern.
The result is as follows:
I am pretty much satisfied with this result but I welcome alternative proposals if you think you can find something better. Just in case I tried to find other possible fittings between the two graphs and the best I could come up with was this:
Unlike in the previous case this alternative does not satisfy me, nor I think it will anybody else. Even if the oldest dates could fit better with some usual assumptions (OOA at 80-70 kya, main Eurasian expansions at 60-40 ka), it makes the "recent past" final line to be way too distant from the present, well in the Magdalenian period and in the middle of a cold phase. There are many other inconsistencies that suggest that this "short chronology" version is wrong.
But feel free to experiment yourself: maybe you can come up with some improved chronology that I have missed.
So I am sticking to the first graph, which I am pretty much satisfied with. What revised conclusions can we come up with?
1. The Y-DNA root and the OOA (CF split) epysode are close in time. It suggests that the whole process of Y-DNA diversification at high levels happened in an expansive phase that culminated in the OOA. It fits well with a climatic high and also with archaeological data, recently ratified with the datation of North African Aterian to c. 95,000 BP. It suggests that the OOA route was not via southern Arabia but via the Fertile Crescent instead, where the oldest Eurasian AMH fossils are found.
2. The DE split (OOA chapter 2) is the only anomalous reference point, as it is in a climatic low. Nevertheless this may well be due to the normal margin of error in the estimate and could have happened in the previous or subsequent climatic highs perfectly.
3. The F-K (or F-IJK-K-NOP) supernode (first expansion) is in the 80-70,000 BP window. It may have got the Toba epysode in between (sharp valley between two climatic peaks) or right after it (much larger and also deep climatic low). Whatever the case, it fits well with the evidence of South Asian cultural continuity at Jawalpura under and over the Toba ash layer.
Of some interest is that the first and second nodes in this supernode show divisions with West Eurasian exclusive subclades, as are G adn IJ, as well as South Asian only (H). It suggests that "the F clan" was estabilished between West and South Asia at the time.
A parallel expansion is that of macrohaplogroup D, which shows an East Asian distribution nowadays (from Andaman to Siberia). It is possible that D lineages represent, in the Y-DNA, the oldest Eastern Eurasian signature.
In Africa, haplogroup B seems also to have expanded in this window.
4. The second expansion corresponds to a better accepted period: that between 60 and 50,000 BP for the Eurasian expansion.
The expansion of macrohaplogroup C may have happened then (though there is great uncertainty, because this clade is not sufficiently well studied). A possible center for this haplogroup could have been SE Asia, though South Asia is also a possibility.
Other splits happening in this phase are (seemingly) those of H, IJ, NO and P (Q and R). It clearly seems an already regionalized expansion in South Asia, West Asia, East Asia and Central/South Asia respectively. Some time before, Melanesian clade M expanded too, what surely means that people were already thriving in New Guinea at that time.
In Africa, haplogroup E also began its early expansion at this time.
5. Another moment of particular interest is c. 41,000 BP, where the graph places the split between I2a and I2b, as well as of J1 and J2. This is so strictly coincident with Aurignacian expansion that I can't but take it as proof that the graph is well calibrated (as this was not taken in account initially at all). Further division of these clades happened closer to the Gravettian timeline, what makes me wonder if some J2 subclades, rare in West Asia but common in Europe and South Asia, are not pre-Neolithic signature as well.
Other clades expanding in this period (roughly 45-30,000 BP) are C2 (Melanesia), G (West Eurasia), N (East and North Eurasia), O (East and SE Asia), Q (South, Central and North Asia), R (South, Central and West Eurasia) and S (Australia).
In Africa, it is also the time of expansion of E1b1 and E1b1b (but not yet of E1b1a), as well as that of E2 (but not yet of E1a).
6. The last mark in cyan color in the graph is for the formation of the West European R1b1b2a1, dated to some 19,000 years ago. It really makes it look like a Solutrean or Magdalenian founder effect. A matter that surprises me but that I am going to research as much as I can, looking for possible precursors of either of these cultures in West Asia, where R1b coalesced almost without doubt since some 30-28,000 years ago. This date for R1b as a whole is nevertheless most intriguing, as it is oddly coincident with Gravettian expansion. I can only scratch my head at the moment, as the structure of R1b is only relatively well understood with many blanks in our knowledge of non-European (and even European) subclades.
The formation of the (rather rare) R1b1b1a subhaplogroups would still fall within a late Magdalenian (or early post-Magdalenian at most) time frame.
Other expansions at this "late" moment are those of E1a and E1b1a (Africa), C1 (Japan), L (South and Central Asia), T (West Eurasia), and probably R1a1 towards the easternmost edge of Europe.
7. The "recent past" final line of (relative) stability is dated to some 9,000 years ago, in the Epipaleolithic or early Neolithic (depending on the region). This may seem a little early to some but it's what the excercise of fine tuning has produced on its own. It does anyhow fit with a climatic high, what makes sense.
That's all, folks.
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Previous post of the Y-DNA timeline series: 1, 2, 3.
Related R1b structure post.
MtDNA miniseries: 1, 2, 3.
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Labels:
Global genetics,
population genetics,
Prehistory,
Y-DNA
Irradiated food destroys myeline, causes neurological diseases
Experiments with cats have shown that a diet of irradiated food causes destruction of the nerve insulator myelin and subsequent neurological diseases. The good news is that, removed the radiactive diet, cats recover slowly but satisfactorily.
While the authors argue that they think that the cause of the myeline destruction is "species specific" they provide no evidence for this claim, which sounds in fact mere wishful thinking. Food irradiation is somewhat common in industrial countries, especially the ultra-modernist (for some things) USA, being a rather controversial method of food preservation.
Significatively multiple sclerosis (one of the major diseases caused by myelin deterioration) is much more common in North America and some parts of Europe (areas where food irradiation is relatively common) than anywhere else in the world, though genetic factors may also be at play.
Other illnesses associated with faulty myelin are autism and alzheimer, while the latter is clearly an age-related problem, autism appears to have increased a lot in the last decades, precisely since food irradiation became common.
Source: Science Daily.
Another post on the importance of myelin, for the record.
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Labels:
biology,
health,
radioactivity
Sunday, March 29, 2009
Fascist genocide of Basques among most brutal in Europe
Lau Haizetara Gogoan (meaning recalling to the four winds, i.e. speaking out loud) has arrived to the conclusion that the Fascist genocide in the Basque Country was one of the most brutal in the Western World in the 20th century. In the case of Navarre, it murdered 1.13% of all people, a situation only superated by Bosnia of all studied cases. Even the raw numbers approach those of fascist Argentina (which has a population many times larger).
They protest that, while in other cases of brutal fascist repression and genocide, truth comitees have been created to clarify what happened and compensate as much as possible the victims, in Spain nothing of the like has ever happened. Instead the matter is once and again hidden under the rug, allowing the modern fascists of the Tory party (now they call themselves "christian-democrats") to attempt once and again to deny it and even to make threats against (the so-called) democracy each time the issue is raised.
Overall it is estimated that some 1 million people (c. 4-5%) were killed during the Civil War and in its aftermath, throught the Spanish state. Most of them did not die in the battlefields. And while the leftists also killed some people, the vast majority of deaths were summary executions in the fascist zone, where anyone who was thought as vaguely "red" was simply murdered without further questions.
This of course did not end with the war. I always remember an anecdote of my aunt (my uncle's wife), who came from Salamanca to work as teacher in Ondarroa (a massively Basque-speaking town, language that she did not know) in the 60s. One of her pupils, a teenager, dared one day to call the Spanish policemen txakurrak ("dogs", our equivalent of English "pigs" in a similar context) . They immediately arrested him and he came out of the police station dead. Just an anecdote, albeit very illustrative of the kind of criminal regime we had to face and we still have to face to a great extent.
Source for the main news: Gara.
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Labels:
Basque history,
Basque politics,
fascism,
genocide
Millet farmed in North China earlier than thought
New isotopic studies on the bones of dogs and pigs in Dadiwan tell us that dogs, and hence people too, had a millet-based diet as early as 7900-7200 years ago (Dadiwan 1). They were therefore surely farmers at that early stage.
Pigs instead only show the millet isotopic signature in the second phase (6500-4900 BP), what suggests to researchers that they were still wild (though maybe they were just being fed in woodlands, as pigs have been traditionally fed everywhere, I guess).
In any case this research confirms the oldest possible dates for the beginning of agriculture in Northern China.
Source: Science Daily - Early Agriculture Left Traces In Animal Bones.
Paper: L. Barton et al., Agricultural origins and the isotopic identity of domestication in northern China. PNAS, 2009.
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Fascist manipulation of time
Today again our time is being commanded to be altered by the bureaucrats. The reason is not just plainly stupid but also a war measure from the very beginnings of the disciplinary phase of Capitalism. I really do not have to sleep one hour less and mostly ignore the watch altogether but anyhow: what the fuck?!
In fact we should be using here a strict GMT and instead we are using the time of Germany and Poland, plus one extra hour of delay because of this idiotic DST. So in the end we have a totaly distorted time when 12:00 pm is not noon at all but rather early in the morning (would be 10:00 am), so people have their meals at 2 or 3:00 pm.
I just hate all that. Noon is noon and I don't really have to be estimating that noon is at 2:00pm.
Bureaucrats: surrender, your time is long overdue! You can't defeat Nature.
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Friday, March 27, 2009
Of mice, men... and astrocytes
This is an interesting breaktrhough in neuroscience: US researchers have found that what really separates human brains from those of mice and rats, and probably from those of other rather intelligent (and certainly big-brained) animals as elephants, is not our neurones (identical) but the other brain and spinal cells: the astrocytes.
Astrocytes have been long thought to be mere support units in brains. One of the reason is that they do not communicate via electrical signals and therefore are hard to listen to. But what is been now discovered is that they actually communicate with neurons via calcium exchanges and that, importantly, human brains have unique types of astrocytes (laminar ones) and also that other common types are larger and maybe more sophisticated.
Full story in Science Daily.
Original paper: N. Oberheim et al., Uniquely Hominid Features of Adult Human Astrocytes.
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Labels:
human evolution,
intelligence,
psychology
Tuesday, March 24, 2009
Y-DNA Timeline (3). Rapidly branching sequences.
This appears not to be clear to some, it seems to me from the discussion in the first post of this mini-series. So I'll try to clarify with an image, a version of the previous graph(s):

Here I have marked in green the most obvious rapidly successive branchings in the tree (there may be others in the lineages not considered here as well). What do we see?
1. The tightest of all of this rapidly branching sequences is the K-NOP bloc. Logically, as they are only separated by one, recently discovered, SNP. This means that these two nodes happened within a short period (here estimated as 1000 years: c. 66-65,000 BP).
2. This K-NOP "supernode" can be included within another: F-IJK-K-NOP. Nevertheless this one is maybe the less tight of all marked sets (this supernode is estimated to last some 8,000 years instead: c. 73-65,000 BP).
3. Within haplogroup E, we see two "supernodes":
3.1. E-E1: which means that E2, E1a and E1b split in a short period (est. 2000 years: c. 47-45,000 BP).
3.2. E1-E1b: which means that E1b1a and E1b1b1 and E1b1b2 a split in about the same epysode (est. 3000 years: c. 33-30,000 BP).
4. Within haplogroup I we can easily appreciate that I1, I2a and I2b split also in a rapid sequence (est. 3000 years: c. 40-37,000 BP).
5. Within haplogroup J can also see that J1, J2a and J2b branched from the parental node in a similarly brief window (est. 3000 years: c. 37-34,000 BP).
6. The other haplogroup where we can see such "supernodes" is R1:
6.1. First, R1a, R1b1a, R1b1c, R1b1b1 and R1b1b2 split in a brief epysode, estimated in 4000 years here (c. 25-21,000 BP maybe).
6.2. Second (within R1b1b2) R1b1b2a*, R1b1b2a1* and the widespread R1b1b2a1a branched out in a similarly brief period (est. 3000 years), that is coincident with the late Magdalenian timeline (c. 16-13,000 BP).
So as conclussion:
First of all, someone explains me how the new discovered SNP defining the NOP macro-haplogroup makes any difference at all in the sequence of diversification of K in a very short period, generally believed to have happened in South Asia.
Second, someone explains me how to make sense archaeologically of R1b1b2 arriving from somewhere in the SW regions of Asia to Europe within what seems to be more a Solutrean than a Gravettian context? Has any proto-Solutrean been found in West Asia (for instance)? Proto-Magdalenian maybe? I know of nothing of the kind, except maybe a late "Aurignacoid" industry of Iran someone mentioned to me once.
Third, haplogroup I looks more and more a pervivence of Aurignacian colonization and might even be used to fine tune the chronology, pushing it back 2,000 (Aurignacian sensu stricto) or even 6,000 years (Balcanic Bacho Kiro culture and other transitional groups). An expansion within West Asia (J and G) may be parallel to Aurignacian or rather a little later in time (curiously enough).
And that's all for today.
.
Here I have marked in green the most obvious rapidly successive branchings in the tree (there may be others in the lineages not considered here as well). What do we see?
1. The tightest of all of this rapidly branching sequences is the K-NOP bloc. Logically, as they are only separated by one, recently discovered, SNP. This means that these two nodes happened within a short period (here estimated as 1000 years: c. 66-65,000 BP).
2. This K-NOP "supernode" can be included within another: F-IJK-K-NOP. Nevertheless this one is maybe the less tight of all marked sets (this supernode is estimated to last some 8,000 years instead: c. 73-65,000 BP).
3. Within haplogroup E, we see two "supernodes":
3.1. E-E1: which means that E2, E1a and E1b split in a short period (est. 2000 years: c. 47-45,000 BP).
3.2. E1-E1b: which means that E1b1a and E1b1b1 and E1b1b2 a split in about the same epysode (est. 3000 years: c. 33-30,000 BP).
4. Within haplogroup I we can easily appreciate that I1, I2a and I2b split also in a rapid sequence (est. 3000 years: c. 40-37,000 BP).
5. Within haplogroup J can also see that J1, J2a and J2b branched from the parental node in a similarly brief window (est. 3000 years: c. 37-34,000 BP).
6. The other haplogroup where we can see such "supernodes" is R1:
6.1. First, R1a, R1b1a, R1b1c, R1b1b1 and R1b1b2 split in a brief epysode, estimated in 4000 years here (c. 25-21,000 BP maybe).
6.2. Second (within R1b1b2) R1b1b2a*, R1b1b2a1* and the widespread R1b1b2a1a branched out in a similarly brief period (est. 3000 years), that is coincident with the late Magdalenian timeline (c. 16-13,000 BP).
So as conclussion:
First of all, someone explains me how the new discovered SNP defining the NOP macro-haplogroup makes any difference at all in the sequence of diversification of K in a very short period, generally believed to have happened in South Asia.
Second, someone explains me how to make sense archaeologically of R1b1b2 arriving from somewhere in the SW regions of Asia to Europe within what seems to be more a Solutrean than a Gravettian context? Has any proto-Solutrean been found in West Asia (for instance)? Proto-Magdalenian maybe? I know of nothing of the kind, except maybe a late "Aurignacoid" industry of Iran someone mentioned to me once.
Third, haplogroup I looks more and more a pervivence of Aurignacian colonization and might even be used to fine tune the chronology, pushing it back 2,000 (Aurignacian sensu stricto) or even 6,000 years (Balcanic Bacho Kiro culture and other transitional groups). An expansion within West Asia (J and G) may be parallel to Aurignacian or rather a little later in time (curiously enough).
And that's all for today.
.
Labels:
Global genetics,
population genetics,
Prehistory,
Y-DNA
The Inquisition continues
Someone reminded me this morning that the dreaded Easter week with its masked anti-musical terrors and worship of death was about to come and, yeah, it seems that the old ghosts of the Judeo-Christian terror are not dead at all, that the guillotine left too many heads on their shoulders.
The Spanish Inquisition, of course, continues its work, and has yesterday indicted 44 more people accused of witchery. Now they call it "belonging to terrorist band", but the real charges are just to be active in politics: issuing a press conference, speaking in a political meeting, or attempting to run as candidate in the so-called "democratic elections". Things like that.
If you are Basque and proud, you are in their list.
.
Labels:
false democracy,
Neoinquistion,
police state
Friday, March 20, 2009
Timeline of human Y-DNA (2)
Here there is a refinement and expansion of my previous post on the matter.
I have now analyzed DE, C, IJ and NO structure too. The result is as follows:

Please compare with climatic data for possible fine tuning (my first impression is that it fits reasonably well but that minor corrections may be done too).
So let's see how it did man's history (man to be taken literally: human male lineages are the only ones considered here).
1. Root:
The so called "Y-DNA Adam", i.e. the common ancestor by pure father-son line of all living humans may have lived some 107,000 years ago. Humankind is of course much older, possibly double that figure, but "Mr. Adam" seems to have lived much later, soon before the out-of-Africa epysode.
2. Out of Africa:
The C,F line split c. 99,000 years ago. This lineage is clearly of Eurasian coalescence: all derived lineages in Africa (not many) represent back-migrations at much later dates. Hence the main migration out of Africa must have happened then. At similar dates we also have the oldest AMH remains in North Africa (Aterian) and West Asia. Some South Asian indirect evidence might also point to AMH presence at those dates, though this is arguable.
Significatively, the third Eurasian lineage, D, may have been at that time still in Africa. This is intriguing, as it suggests a second migration for this lineage alone at a later time, maybe 83,000 years ago.
In Africa, at similar dates to those of the C,F migrating adventure, we witness the expansion of haplogroup A, which is widely spread from Sudan to South Africa. This may signal that the C,F migration happened within the context of an Eastern African expansion. C,F would then have been the ones migrating to the North, to the Mediterranean coasts and beyond into Asia.
3. Toba and first Eurasian expansion:
We know with great certainty that some 74,000 years ago, Toba caldera (Sumatra) exploded, causing a major catstrophe in Asia and a sharp freeze around the globe. We also know that populations in India (Jawalpuram culture) survived the catastrophe. The Eurasian humankind probably experienced a bottleneck and then an expansion after this epysode. It is only logical to date this first expansion (the rapid succesive branching of F, IJK, K and NOP nodes) soon after Toba therefore.
This expansion was limited anyhow, as we witness a rather long period of latency after it (65-55,000 BP). It is likely though that the major proto-lineages were distributed as follows:
But the overall distribution of these clades does indeed suggest that there was some spread to the East (4-5 clades) and West (3-4 clades) of the probable South Asian homeland (2-4 clades) already. Another possibility would be that all clades were restricted to some geographical province like South Asia.
In Africa, at similar dates, we see the first expansion of haplogroup B (split into B1 and B2), which may signal a first expansion of Humankind westward in that continent.
4. The second Eurasian expansion:
This is probably the main real expansion, and one for which we do have some clear fossil evidence. I have estimated it to have taken place between c. 55-46,000 years ago and would have certainly pushed humankind all around Asia and continental Oceania.
At this phase:
5. Later expansions:
The later expansive trend seems to have no clear bounds. We can point some moments though:
5.1. The great North: The first branching of the two major clades of the great Eurasian North: N and Q (C3 would seem to have a later timeframe) happened before 40,000 years ago, it seems.
5.2. West Eurasia:
The division of haplogroup O in its three main branches seems to have happened also c. 39,000 years ago. The spread of each of these clades, as well as C3, seems to have happened some time later: around 30,000 BP.
5.4. Haplogroup R:
The somewhat controversial haplogroup R, extended by Europe, Central and South Asia mostly, may have split c. 35,000 years ago. This can be considered as the origin of South Asian R2, which seems to be an old clade in the subcontinent.
R1 appears to have divided c. 27,000 years ago, which probably meant that proto-R1b migrated out of South Asia (or maybe Central Asia) about that time, while proto-R1a remained behind. Destination? Almost without doubt West Asia. There is a serious possibility that it could have taken part in the Gravettian expansion in Europe, which began c. 28,000 BP. Its parallels with confirmed Gravettian mtDNA H do suggest it (but this is somewhat controversial).
R1b1 may have split c. 25,000 years ago, though the position of the other clades (African R1b1c and Mediterranean R1b1a) is still unclear. R1b1b would have split c. 23,000 years ago (origin of R1b1b1 and R1b1b2).
Some 19,000 years ago R1a started evolving into R1a1, which may mean a migration between Central and South Asia, though the exact direction is at this moment unclear. Roughly, R1a1 was formed by c. 17,000 BP, R1a1a by 13-12,000 BP and the various subclades (R1a1a3 as prototype) could be as recent as c. 6000 BP, what fits almost perfectly with the Kurgan model of Indo-European expansion.
R1b1b2a apparently c. 16,000 years ago, while Western European typical R1b1b2a1 would have been formed c. 14,000 BP and derived R1b1b2a1a by c. 13,000 BP. These latter dates fit too well with the time of Magdalenian expansion to Central Europe (and later to southern Iberia) to be ignored.
The relatively rare R1b1b2a1a subclades would have begun appearing c. 9,000 BP, what would mean limited Epipaleolithic and maybe even Neolithic local founder effects. Notice please that these subhaplogroups include only a small apportion of all R1b1b2a1, even if some of them have some localized relevance.
If European R1b is not of Gravettian origin, it would require a migration from West Asia at the foundation of Magdalenian culture, some 17,000 years ago. This is not what archaeology tells us: it says that Magdalenian was a local Aquitanian developement, maybe influenced by Aurignacian remnants of Central Europe (Magdalenian and Aurignacian are very similar). So I remain inclined to think that R1b arrived to Europe with Gravettian, drifting massively with the Late Glacial Maximum, what virtually erased all other Y-DNA lineages, be them R1b or I2 or whatever else. Then, as generally accepted, R1b1b2a expanded into Central Europe and Iberia with the Magdalenian expansion and later, in the Epipaleolithic, into Scandinavia and the Atlantic Islands.
I am anyhow intrigued more and more about the exact nature of SW European I, which has not been properly tested for the most part. Some of it is clearly I2a that arrived with Neolithic expansions from the Western Balcans but the rest is just I* as of today.
Comparison with mtDNA:
For the parallel mtDNA possible timelines, see these posts: 1, 2, 3.
It's noticeable that with a similar SNP-based method I also detected two apparent expansive pulses in the mtDNA timeline, separated by a "valley" of limited growth. The overall pattern would be the same:
1. First Expansion
2. Pause
3. Second Expansion
4. Aftermath of regionalized and rather continued expansion, which included the first colonizations of Europe and the Eurasian North
.
I have now analyzed DE, C, IJ and NO structure too. The result is as follows:
Please compare with climatic data for possible fine tuning (my first impression is that it fits reasonably well but that minor corrections may be done too).
So let's see how it did man's history (man to be taken literally: human male lineages are the only ones considered here).
1. Root:
The so called "Y-DNA Adam", i.e. the common ancestor by pure father-son line of all living humans may have lived some 107,000 years ago. Humankind is of course much older, possibly double that figure, but "Mr. Adam" seems to have lived much later, soon before the out-of-Africa epysode.
2. Out of Africa:
The C,F line split c. 99,000 years ago. This lineage is clearly of Eurasian coalescence: all derived lineages in Africa (not many) represent back-migrations at much later dates. Hence the main migration out of Africa must have happened then. At similar dates we also have the oldest AMH remains in North Africa (Aterian) and West Asia. Some South Asian indirect evidence might also point to AMH presence at those dates, though this is arguable.
Significatively, the third Eurasian lineage, D, may have been at that time still in Africa. This is intriguing, as it suggests a second migration for this lineage alone at a later time, maybe 83,000 years ago.
In Africa, at similar dates to those of the C,F migrating adventure, we witness the expansion of haplogroup A, which is widely spread from Sudan to South Africa. This may signal that the C,F migration happened within the context of an Eastern African expansion. C,F would then have been the ones migrating to the North, to the Mediterranean coasts and beyond into Asia.
3. Toba and first Eurasian expansion:
We know with great certainty that some 74,000 years ago, Toba caldera (Sumatra) exploded, causing a major catstrophe in Asia and a sharp freeze around the globe. We also know that populations in India (Jawalpuram culture) survived the catastrophe. The Eurasian humankind probably experienced a bottleneck and then an expansion after this epysode. It is only logical to date this first expansion (the rapid succesive branching of F, IJK, K and NOP nodes) soon after Toba therefore.
This expansion was limited anyhow, as we witness a rather long period of latency after it (65-55,000 BP). It is likely though that the major proto-lineages were distributed as follows:
- C, still undivided, in South or SE Asia
- D*, D1, D2 and D3, already outlined, maybe in SE/East Asia
- G in Central/West Asia
- H in South Asia
- IJ in West Asia
- L in South Asia
- M in SE Asia or Melanesia
- S in SE Asia or Australia
- T in West Asia
- NO in SE/East Asia
- P in South/Central Asia
But the overall distribution of these clades does indeed suggest that there was some spread to the East (4-5 clades) and West (3-4 clades) of the probable South Asian homeland (2-4 clades) already. Another possibility would be that all clades were restricted to some geographical province like South Asia.
In Africa, at similar dates, we see the first expansion of haplogroup B (split into B1 and B2), which may signal a first expansion of Humankind westward in that continent.
4. The second Eurasian expansion:
This is probably the main real expansion, and one for which we do have some clear fossil evidence. I have estimated it to have taken place between c. 55-46,000 years ago and would have certainly pushed humankind all around Asia and continental Oceania.
At this phase:
- C split into its major subclades, which went variedly to Japan (C1), Melanesia (C2), NE Asia (C3), Australia (C4) and South Asia (C5). There's another subclade (C6) whose geography has not been reported.
- H split into H1 and H2 (in South Asia)
- IJ split into I and J (in West Asia)
- NO split into N and O (in southern East Asia probably)
- P split into Q and R (in South or Central Asia)
5. Later expansions:
The later expansive trend seems to have no clear bounds. We can point some moments though:
5.1. The great North: The first branching of the two major clades of the great Eurasian North: N and Q (C3 would seem to have a later timeframe) happened before 40,000 years ago, it seems.
5.2. West Eurasia:
- I branches out since 39,000 BP, what makes it a good candidate for the "Aurignacian clade" (would need to be 2,000 years older but close enough). Scandinavian I1, anyhow would be lurking as minor haplogroup until the Epipaleolithic, while I2 instead appears expansive through all the European UP.
- J branches at a similar time (maybe a little later).
- The spread of G is also parallel to that of J and I2 (since c. 37,000 BP)
The division of haplogroup O in its three main branches seems to have happened also c. 39,000 years ago. The spread of each of these clades, as well as C3, seems to have happened some time later: around 30,000 BP.
5.4. Haplogroup R:
The somewhat controversial haplogroup R, extended by Europe, Central and South Asia mostly, may have split c. 35,000 years ago. This can be considered as the origin of South Asian R2, which seems to be an old clade in the subcontinent.
R1 appears to have divided c. 27,000 years ago, which probably meant that proto-R1b migrated out of South Asia (or maybe Central Asia) about that time, while proto-R1a remained behind. Destination? Almost without doubt West Asia. There is a serious possibility that it could have taken part in the Gravettian expansion in Europe, which began c. 28,000 BP. Its parallels with confirmed Gravettian mtDNA H do suggest it (but this is somewhat controversial).
R1b1 may have split c. 25,000 years ago, though the position of the other clades (African R1b1c and Mediterranean R1b1a) is still unclear. R1b1b would have split c. 23,000 years ago (origin of R1b1b1 and R1b1b2).
Some 19,000 years ago R1a started evolving into R1a1, which may mean a migration between Central and South Asia, though the exact direction is at this moment unclear. Roughly, R1a1 was formed by c. 17,000 BP, R1a1a by 13-12,000 BP and the various subclades (R1a1a3 as prototype) could be as recent as c. 6000 BP, what fits almost perfectly with the Kurgan model of Indo-European expansion.
R1b1b2a apparently c. 16,000 years ago, while Western European typical R1b1b2a1 would have been formed c. 14,000 BP and derived R1b1b2a1a by c. 13,000 BP. These latter dates fit too well with the time of Magdalenian expansion to Central Europe (and later to southern Iberia) to be ignored.
The relatively rare R1b1b2a1a subclades would have begun appearing c. 9,000 BP, what would mean limited Epipaleolithic and maybe even Neolithic local founder effects. Notice please that these subhaplogroups include only a small apportion of all R1b1b2a1, even if some of them have some localized relevance.
If European R1b is not of Gravettian origin, it would require a migration from West Asia at the foundation of Magdalenian culture, some 17,000 years ago. This is not what archaeology tells us: it says that Magdalenian was a local Aquitanian developement, maybe influenced by Aurignacian remnants of Central Europe (Magdalenian and Aurignacian are very similar). So I remain inclined to think that R1b arrived to Europe with Gravettian, drifting massively with the Late Glacial Maximum, what virtually erased all other Y-DNA lineages, be them R1b or I2 or whatever else. Then, as generally accepted, R1b1b2a expanded into Central Europe and Iberia with the Magdalenian expansion and later, in the Epipaleolithic, into Scandinavia and the Atlantic Islands.
I am anyhow intrigued more and more about the exact nature of SW European I, which has not been properly tested for the most part. Some of it is clearly I2a that arrived with Neolithic expansions from the Western Balcans but the rest is just I* as of today.
Comparison with mtDNA:
For the parallel mtDNA possible timelines, see these posts: 1, 2, 3.
It's noticeable that with a similar SNP-based method I also detected two apparent expansive pulses in the mtDNA timeline, separated by a "valley" of limited growth. The overall pattern would be the same:
1. First Expansion
2. Pause
3. Second Expansion
4. Aftermath of regionalized and rather continued expansion, which included the first colonizations of Europe and the Eurasian North
.
Labels:
Global genetics,
population genetics,
Prehistory,
Y-DNA
Thursday, March 19, 2009
Intelligence, quality wiring and inheritance
From Science Daily. Original paper: Ming-Chang Chiang et al., Genetics of Brain Fiber Architecture and Intellectual Performance, Journal of Neuroscience, 2009.
UCLA researchers have discovered that intellectual performance is strongly correlated with the quality of the mieline covering of neuronal axons in the brain. Which in turn is strongly dependent on genetics.
For starters, mieline is the isolation layer around the "cables" (axons) in our brain and nerves. While neurons have many sinapsis (connections with other nearby neurones), they have one or two longer extensions called axons, which are the "cables" of our nervous system, brain included.
When axons' mieline is thick and therefore provides a good quality isolation, the neuronal signal is stronger and clearer. Instead, when mieline is thinner, the electrical isolation is worse and the neuronal signal weaker. The first case provides for good intelligence, while the latter does not; additionally bad mieline covering is also related to mental illnesses like autism and alzheimer. Mieline thickness also shows a U-shaped pattern in life that is optimized for middle age (the acmé of classical Greeks, located around the age of 40), what explains increase and decrease of intellectual prowess with age.
The UCLA team compared pairs identical twins (natural "clones") and normal syblings, finding more marked differences in mieline quality among the latter, all which correlated with intelligence. This seems to support a genetic background for these differences, as regular syblings share only c. 50% of the genes that are variable in humans (can be more or less but around that median figure anyhow), while identical twins share virtually 100% of their genes.
I find this interesting because the main classical anthropometrical correlation with intelligence used to be brain size (though independent for each gender) but many of us suspected that size was not the only thing that mattered. This in fact comes to prove that the quality of wiring, something that cannot be measured in cubic centimeters of cranial capacity, also influences intelligence strongly. It will be surely long before we can discover other such "design" factors (mieline quality being again a relatively easy to measure element, yet only now studied), things like the design of the neuronal network itself, probably a less genetic and more plastic one, organized largely in life by experience, but I'm sure such factors are acting right now. Of course the quality of the materials is influential, maybe fundamental, but how they come to be organized, something that only happens within life, which is surely as dependent on education, general experience and access to knowledge, also matters. The best computer of Earth, if only programmed to add 2+2 won't be able to do anymore, while the worst one can surely do much more than that with due attention.
.
Labels:
biology,
genetics,
intelligence
Tuesday, March 17, 2009
European and Anatolian R1b structure
I have been recently involved in two discussions on R1b origins and structure. Some of the information I or others dug for them has helped me to make up my mind a little better on the issue.
At the moment the we know that R1b has a main subclade, dominant in Western Europe, which is R1b1b2a1. Most known R1b is R1b1b2a1* and R1b1b2a1a*. Additionally there are other upstream subclades:
- R1b1b1, common in SE Europe, West Asia and Uyghuristan
- R1b1a (exact location within the tree unclear), found in Lebanon and Sardinia
- R1b1c (exact location within the tree unclear), found in Northern Cameroun (Ouldeme and others)
All this certainly suggest that, once upon a time, the ultimate origins of the haplogroup were in West Asia, but also that R1b1b2a1 must be treated as a separate reality within R1b, and that this clade most likely coalesced or at least expanded ("exploded", as its starlike structure strongly suggests) within Western Europe.
In any case, I have revisited Alonso et al, 2005 and, based on my newly acquired knowledge on ht35, reviewed my old reconstruction of the R1b tree accordingly, placing Anatolian ht35 at the root instead of the Western modal haplotype. The result is as follows:
The DYS used by Alonso, and also in the above graph, are: 19-390-391-392-393. [Note: I wrongly wrote originally 90 instead of 390, bringing confusion even to myself. My apologies and thanks to Xavier for pointing out that important error at the comments section. Corrected on Oct 11].
Like in the original version, the four haplotypes in larger type are the most common ones:
- 14-24-11-13-12 (light blue in Alonso's map) is common in Anatolia and found at lower frequencies in SE Europe and also at small ammounts in Central-Western Europe (Germany, Belgium, Friesland).
- 14-24-11-13-13 (red in Alonso's map) is widely distributed, being most common if anywhere among Basques. It is the modal haplotype.
- 14-23-11-13-13 (purple-blue in Alonso's map) has mostly a northernly distribution, with highest frequencies in the Low Countries and Austria.
- 14-24-10-13-13 (black in Alonso's map) has also a northerly distribution, especially around the North Sea, but is also found in SW Europe and even Africa and Anatolia at rather high frequencies.
____________________________________________________________
Postscript:
[Section revised on Oct 11, after taking note of the important DYS sequence error - see above. Significatively new areas are in this color (blue)].
Checking again on the Family Tree DNA hg35 site (only the properly tested samples), I realize that they fit as follows:
- R1b1b2* (L23-, L51-, L11-) most typical haplotype is 14-24-10-14-12, which above appears as derived "Berber/Anatolian" subclade. Also less common is 14-25-11-13-12, not registered here (though maybe listed in the supplementary materials table).
- R1b1b2a* (L23+, L51-, L11-) most common haplotype is 14-24-11-13-12, which is the "modal" Anatolian subclade, the apparent root in the graph above. Also 15-24-11-13-12 (Middle European distribution that could mathc Neolithic spread, for some odd reason not shown in the post's graph) and others less common.
- R1b1b2a1* (L23+, L51+, L11-) common haplotypes are 14-24-11-13-13 ("R1b modal"), 14-23-11-13-13 ("Belgium-Austria") and 14-25-11-13-13 ("Welsh"). Importantly 14-23-11-13-13 is one of the major haplotypes in Europe and seems to suggest an early divergence in Central Europe at this para-haplogroup stage.
- R1b1b2a1a (L23+,L51+, L11+) most common haplotype is again "modal" 14-24-11-13-13. Some of the rest have 15-24-11-13-13, a small Middle European subclade. 14-24-11-14-13 is also seen in several cases at FTDNA and it's a minor Atlantic clade of Britain and Iberia. The "Scottish" (plus North Sea/Basques) major haplotype 14-24-10-13-13 also falls mostly in this haplogroup.
.
Labels:
European genetics,
Y-DNA
Friday, March 13, 2009
Timeline of human Y-DNA (1)
Tired of relying on unlikely TRMCA esimates by others, I decided to take a look at human Y-DNA structure on my own. Unlike with mtDNA, which is relatively asy to study in full, the Y chromosome is very large and, with very few exceptions, it has never been studied in such lenghts. Instead geneticists have been gradually adding SNPs to their collections and that way perfecting our understanding of human paternal genalogy.
But the different branches are very unequally studied. Some like Western European R1b are very well studied (partly via private genealogy companies) and we can presume that we know already most of the SNPs that exist in that line. In comparison others are barely sketched.
This uneven reality of knowledge makes very difficult to compare the different lineages as I did with mtDNA using SNPs (see here, here and here). So I did the following: using the YSOGG data, took a reference lineage (the longest one from root to tip: R1b1b2a1a4a, 104 known SNPs from "Adam") and took also sample lineages in each of the other branches (always the longest apparent line within each). With simple maths I determined the "informative value" of each SNP in those lineages (always in comparison to the reference) and then calculated the equivalent value of the lineal sequences of SNPs at the root of each branch.
The resulting chart is as follows:
Whatever the case, I did some afterwork on the raw diagram, trying to find out some logical timelines. I ended with the following:
Analyzing the intrepretation a little bit:
1. R1b
R1b may be than 20,000 years BP (the R1b apparent node falls exactly in the 21 kya line and the R1 node is at the 23 kya line), what is more coincident with Solutrean than Magdalenian. But the most common subclade R1b1b2a (and notice that the other subclades' position is unclear) appears diversified as recently as c. 5000 BCE. At that date Europe was like this and even if we stretch the timeline a little (map), we can only attribute this homogenity within R1b safely to the post-Magdalenian Epipaleolithic context (Tardenoisian especially). So it is possible that most modern European R1b (R1b1b2a) only consolidated in Epipaleolithic times and may have a more northernly origin than the Basque Country (France-Belgium-Rhineland). It might also be Neolthic but it's extremely difficult to find a single Neolithic source for that.
R1b is not just present in Europe and West Asia but it's also frequent in Africa and Central Asia. The latter is mostly R1b1b1, while the (ill-studied) African one falls within two categories: Euro-like R1b1b2a and exotic R1b*. Egyptian R1b is evenly divided in these two categories while Ouldeme R1b appears to be R1b* (some distinct subclade, not yet categorized) in its totality. If the current understanding of non-European R1b is correct (it may be not), then the overall expansion of R1b may have happened c. 20,000 years ago, maybe in connection with Solutrean and related cultures like Iberomaurusian (Oranian), while the "European" R1b instead would have expanded closer to the Epipaleolithic/Neolithic timeline, it seems.
2. R1a
The node shown (c. 18,000 years ago) represents the earliest bifurcation, which surely happened in South or Central Asia. It does not represent the R1a1a main subclade, which expanded much later with all likehood.
3. R2
We know nothing yet of the substructure of R2 but from the estimates it seems it diverged from R1 c. 32,000 years ago, deep in the Paleolithic.
4. Q
The divergence of R and Q appears even older, c. 42,000 years ago, before most of Europe was colonized by h. sapiens.
5. NO
It's been recently discovered that NO and P share one basal mutation. Still their split falls wholly in the main period of K branching out, that, according to my estimates is earlier than 60,000 BP. I will try to adress NO substructure and internal timeline in the future.
6. K
The K multifurcation appears to represent the main Eurasian expansion better than anything else. It may have happened some 63,000 years ago. Some of the branches (L, T) may have gone by very long coalescence periods, while others expanded soon after the K node instead.
7. IJ
Another recently discovered connecion is that of IJK. IJ separated from K not long before the main K divergence and not long after the main F multifurcation. I and J appear to have split c. 50,000 years ago, maybe in connection with the earliest European colonists in Bulgaria. I will try to adress IJ internal structure and possible timeline in the future.
8. F
F may have been the first lineage to diverge after Toba. If H and G actually hang from the F node directly, this may have happened somewhere in NW South Asia.
9. C
The estimated timeline for the coalscence of C may be too long. I am rather inclined to think its multifucation happened earlier, closer to the F-K spread. Whatever the case, this clade must have participated in the "main Eurasian expansion" right after Toba.
10. DE
I also promise some greater insight in the internal structure of this macro-clade (soon to comeTM). Like in the case of C, the main bifurcation node may be missdated a little too late anyhow.
11. B
It's very curious how this African lineage appears to have an expansion time that parallels that of F-K, right after Toba. This catastrophe surely also affected Africa and may have caused some major alterations and opportuities. Of course, as B is only poorly understood, it may be just an illusion.
12. A
The oldest distinct human lineage would seem to have expanded in a parallel timeline to that of the out-of-Africa epysode. Probably there were favorable climatic conditions in that window, helping everybody.
Enjoy.
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Labels:
Global genetics,
population genetics,
Prehistory,
Y-DNA
Tuesday, March 10, 2009
The Zionist Story (documentary film)
Monday, March 9, 2009
What comes now, once democracy has been abolished
When democracy is nothing but a farce anymore, at least here in the Basque Country, when political factions that barely gather 25% of popular support hold the majority of parlamentary seats and get ready to estabilish a new fascist goverment, we can already see what the future offers.
A few days ago the social center of Vitoria-Gasteiz Zaramazulo was clausurated and searched by Spanish military police with unknown pretexts. The building has been serving as social center for the last 25 years for the neighbourhood of Zaramaga, hosting all kind of activities: theater, music, dance, popular academies, the unemployed workers' assembly, a distibutor of books and records, an altenative magazine, antimilitarist groups, a pro-cannabis platform and the ecologist grpup against the High Speed Train, all were hosted there.
Overnight the Guardia Civil, that in spite of its name is purely military in nature, has take over the place and clausurated it.
I imagine this is only the prelude, the entrance of many more bitter dishes that will come in this increasingly undemocratic period in the Western Basque Country.
The ghost of Franco laughs but we feel no fear, just rage... and rage is what feeds hope, because it feeds the struggle for a better world.
Source for the central info: Eutsi - antiauthoritarian left's page.
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Labels:
Basque,
false democracy,
neoinquisition,
police state,
social centers
Sunday, March 8, 2009
Catalans demand self-determination in Brussels
Some 10,000 Catalans and supporters from various other nationalities demonstrated yesterday in Brussels demanding the EU authorities the recognition of the right of self-determination for the Catalan nation.
The slogan: "We want a Catalan state". Besides Catalan four-barred banners, ensigns from other opressed nations of Europe and the Mediterranean could be spotted as well: Basque, Breton, Flemish, Corsican, Venetian and even Berber flags were present.
"Spanard who doesn't jump" was one of the cries heard in Brussels.
Source: Gara.
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Labels:
Catalonia,
EU,
stateles nations
Status inheritance cultural not genetic
At least among hyenas.
Cubs adopted by high-ranking hyenas inherit the status of their surrogate mothers, not their biological ones. The silver-spoon effect is not genetic but a product of social learning.
Source: Science Daily. Originally from M.L. East et al., 2009.
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Labels:
anthropology,
biology,
sociology
Friday, March 6, 2009
The bantustanization of Palestine
The term Apartheid sounds more and more in relation with Israel and its occupation of the formally unannexed areas of Palestine. One of the central elements of South African Apartheid was the bantustan, micro-states carved out in South African territory, often discontiguous, with no real competences in foreign or even internal policies, created basically to deprive South African Blacks from their citizenship, making the country a little more white and little less black on paper.

South African bantustans in the 1970s and later
The situation is strikingly similar in Palestine, as this Quaker video shows:
There's no two states solution largely because Israel doesn't want it. The term is only waved as support for the creation of a Palestinian bantustan and nothing else.
Source: Desert Peace, originally from Inspired Path.
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South African bantustans in the 1970s and later
The situation is strikingly similar in Palestine, as this Quaker video shows:
There's no two states solution largely because Israel doesn't want it. The term is only waved as support for the creation of a Palestinian bantustan and nothing else.
Source: Desert Peace, originally from Inspired Path.
.
Tuesday, March 3, 2009
Israel shoots farmers and internatonal cooperators (video)
These shootings are not any isolated event. Just that in this occasion they have been captured in video.
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Labels:
Palestine
Monday, March 2, 2009
Undemocratic "elections" in the Western Basque Country
The total banishmen of one the major political forces in the Basque Country (general described as Basque Nationalist Left, that has been between 2nd and 4th force along the years when they actually could run) has left the Western Basque Country deprived of options in the farce represented today, leaving to a mutilated, not representative, autonomous parliament, for the first time ever dominated by the Spanish Nationalists, even if they have only some 25% of the potential votes.
This farce of democracy, denounced even by the United Nations, has been met with many protests, as the images show:
"It's enough! Democracy now!!!" - "This is not democracy"
"This is not democracy"
R. Rato, former IMF Director, also had to put up with protesters
"We will keep applying life sentences" - "Zero democracy"
Source: Gara.
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Labels:
Basque politics,
false democracy,
fascism,
neoinquisition
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