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[QUOTE]Originally posted by Oshun: [QB] [QUOTE]Originally posted by Doug M: [qb] [QUOTE]Originally posted by Oshun: [qb] [QUOTE]Originally posted by Doug M: [qb] Bottom line the game being played here is mislabeling African origins of many ancient DNA lineages as "Eurasian admixture".... And no Africas genetic diversity is not fully documented. So to have folks talking about "Afrocentric" distortion but not pointing out the obvious Eurasiacentric distortion is simply hypocritical....[/qb][/QUOTE]I read a study that originally argued west African mixture, but it turned out it was an error. [/qb][/QUOTE]That is the point. They are over generalizing and using flawed methods to try and estimate mixture but over emphasizing "backflow" without documenting the corresponding outflow from Africa to Eurasia. According to these studies you would think Africans just sat in their "sub saharan" ghettoes for thousands of years and didn't move anywhere and hence are only diverse because of Eurasian admixture. As if Eurasia was genetically isolated from Africa after OOA. But hey, this seems obvious to me. [/qb][/QUOTE]I don't think that geneticists are suggesting Africa (especially SSA) needs Eurasia to be diverse. We also know from the Tichitt tradition that Africans in the Sahara did move south. I don't want to assume everyone in academia has a nefarious interest but I don't agree SSA/Sahara is a good genetic dichotomy or a ecological one. I do think it may be fair to at least consider the Sahara as an ecological construct with localized adaptations. But the Sahara as an ecological construct wouldn't validate everything below it to be a singular unit. [/QB][/QUOTE]
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