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The Mechta-Afalou/Mechtoids redux thread
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[QUOTE]Originally posted by MindoverMatter718: [QB] [QUOTE]Originally posted by The Explorer: [qb] ^Given that microsatellite Y-DNA analysis suggested that the population ancestral to contemporary northwest African Imazighen ("Berbers") emerged ca. 8.2 kya or so in northeast Africa, the northwest African samples here are all too old to be associated with them. [/qb][/QUOTE]Even during this time, these people still wouldn't have been pale as we see them today though, as the allele SLC24A5 111*A present in geographical proximate populations in the middle east, north Africa and Pakistan. Comes from gene flow with European populations. This allele was still under selection in the European population at this time, and only in Europe. So the question is when did Europeans come into these areas to contribute this admixture? Genetic Evidence for the Convergent Evolution of Light Skin in Europeans and East Asians Heather L. Norton,*1 Rick A. Kittles [QUOTE] [b]The frequency of the SLC24A5 111*A allele outside of Europe is largely accounted for by high frequencies in geographically proximate populations in northern Africa, the Middle East, and Pakistan (ranging from 62% to 100%).[/b] [b]The virtual absence of MATP 374*G–derived allele in the sub-Saharan African populations that we examined in the CEPH-Diversity Panel is consistent with the origin of this mutation outside of Africa after the divergence of modern Asians and Europeans.[/b] In contrast, the SLC24A5 111*A–derived allele is found at low frequencies in several sub-Saharan populations including the West African Mandenka and Yoruba, the [b]Southern African San[/b] , and SouthWest Bantu. [b]The relatively high frequencies of the derived allele in Central Asian, Middle Eastern, and North Africa seem likely to be due to gene flow with European populations.[/b] Similarly, the presence of the derived allele (albeit at low frequencies) in some sub-Saharan African populations may be due to recent gene flow from European and Central Asian populations. [/QUOTE] [/QB][/QUOTE]
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