| « Kill 'em before they cause trouble | Gene Expression Front Page | Technology & England » | |
|
April 28, 2003
African-American ancestry
Steve Sailer reports on the search for the genetic ancestors of African-Americans. An interesting snippet:
The human mind is great at making connections and the geneticist in question might not have noticed the similarity of these Hausa to his cousins in physique & personality if he did not already know he had a blood tie to these people-even a distant one. On the other hand-we are often likely to associate mannerisms & behavior to environmental influences, but we should not neglect the importance of genetics on our behavioral patterns, especially when lower level instincts help form higher complexity emergent tendencies.
Posted by razib at
09:14 PM
I have a question if anybody would like to take a stab at it: Would the Iceman (~5000 yrs old) be distinguishable from modern humans? How far back in time would you have to go to find people who looked different from modern humans? Posted by: Jon Wilkins at April 29, 2003 03:56 PM"The body of "Otzi the Iceman" was discovered by hikers in 1991 as ice melted in the Schnalstal glacier, high in the Italian Alps." I donīt suppose he would have looked different from modern day Europeans. Maybe his genotype will reveal peculiar characteristics. Remember we do have records, sculptures and paintings of his southern coevals (Egyptians, Summerians, etc)!And those ancient peoples were modern in every way. By the way, the u.P.I. article about the search for african ancestry also reported the same individual had been found German ancestry through his paternal side.... No comments on going to Germany and sympathising with the locals... Posted by: Eufrenio at April 29, 2003 09:27 PMthe assumption i'm assuming is that the german ancestor inserted his DNA via rape to be graphically clinical about it. as far as differences between "moderns" and "archaics," that is a tricky question, and you can write a book on it (people have). the first "modern looking" humans were probably extent in southern/eastern africa 100,000 years ago, but the cultural explosion that we associate with h. sapiens did not really occur until around 35,000 years ago, when "we" overran europe and displaced neandertals. though the replacement thesis has not be "proven," i think even multiregionalists will have concede that the neandertal contribution is probably less than that of the newcomers from the middle east (if there was intermixing). henry harpending points out that australian aborigines did not bring with them "modern" technology that we associate with our humanity. similarly, as i said there were "modern" looking people in africa for tens of thousands of years before they seem to have exploded out to northern eurasia.... additionally, as has been noted, human phenotype is pretty diverse. the tall nilotic ppl and short twa pygmies live rather close to each other geographically. Posted by: razib at April 29, 2003 10:46 PM"I donīt suppose he would have looked different from modern day Europeans" Yes, he just has 5.000 years and in that time the Europeans looks very similar to their current descendants. Otzi's photos: http://majimena.hp.infoseek.co.jp/oleada/images/otzi2.jpg http://majimena.hp.infoseek.co.jp/oleada/images/otzi3.jpg http://majimena.hp.infoseek.co.jp/oleada/images/otzi4.jpg http://majimena.hp.infoseek.co.jp/oleada/images/otzi.jpg Posted by: J.A. at April 29, 2003 10:47 PM"The body of "Otzi the Iceman" was discovered by hikers in 1991 as ice melted in the Schnalstal glacier, high in the Italian Alps." I donīt suppose he would have looked different from modern day Europeans. Maybe his genotype will reveal peculiar characteristics. Remember we do have records, sculptures and paintings of his southern coevals (Egyptians, Summerians, etc)!And those ancient peoples were modern in every way. Some scholars have termed them "archaic".Of course, being contemporary to "mainstream" humans and fully "sapiens" might rule them out... You would have to look back in time over 25,000 or 30,000 years to find Neanderthals and archaic Homines Sapientes. Of course, his decision to relate to Africans is rational. I am not sure, however, all African-European interbreeding ocurred throug rape. Back then, servants would be supposed to warm their mastersībeds in Europe as well.It is only a general case of serfdom. From what I've read, pygmies are very small but otherwise genetically not too unusual, whereas Bushmen, and I think Australians aborigines, have many peculiar traits. As I remember, the aborigines separated from the rest in the pre-neolithic period ~40000 years ago, and were culturally the most distinctive people (since all other contemporary and recent hunter-gatherers were symbiotic with neolithic cultures). Posted by: zizka at April 30, 2003 05:32 PMI found this on the "Human races" site: "(...) results indicate that anatomically modern humans were present in Australia before the complete fixation of the mtDNA lineage now found in all living people. Sequences from additional ancient humans may further challenge current concepts of modern human origins." Allowing a couple of thousand years for humans to reach Australia, that would point to a second wave from Eurasia 35,000 yrs ago as the common origin of all other humans ("mainstream" for want of a better word). As for Bushmen, they remained too close geographically not to interbreed with this wave, both ways, crucially with those populations who ventured south into the African Continent. Posted by: Eufrenio at April 30, 2003 08:49 PM |
|
|
|
|