They were not 'Africans', they were already evolving into None Africans=Eurasians and seperated from Africans before they even spread out across Eurasia. In fact genetic studies show that ALL Eurasians are more closely related to each other and equally removed from Africans, while Africans clearly separate from ALL NONE AFRICANS and make cluster groups of their own.<quoted text>
Exactly.... The group arose in Africa, it spread out into Asia. They can't admit that because that would make the descendants of m and N which are all over Asia and Europe Afroasiatic groups instead of Eurasian which even with out that being the case, the early migrators were definitely Afroasiatic.
"A PCA using all samples clearly separates Africans from the rest of the world along both axes (figure available on request)." ~ The Andaman Islanders in a Regional Genetic
"The most prominent feature of the genetic distances in this study is the SPLIT between sub-Saharan African and non-African populations" ~ Genetic Variation Among World Populations: Inferences From 100 Alu Insertion Polymorphisms
"The comparison of haplotype variation among populations supports a single out-of-Africa migration event and suggests that the founding population of Eurasia may have been relatively large BUT ISOLATED FROM AFRICANS Africans for a period of time. Note that PC 1 accounts for nearly eight times as much variation as PC 2. This speaks to the African vs. non-African gap."
Pay Attention to what Is posted above and below:
"A more likely explanation for the OoA bottleneck is that Eurasia was populated by a larger population that had been relatively isolated from other modern human populations for tens of thousands of years prior to the expansion. The first fossil evidence for modern humans outside of Africa is in the Middle East at Skhul and Qafzeh between 80,000-100,000 years ago, which is at least 20,000 years prior to the Eurasian diaspora. If a population of modern humans remained in the Middle East until the expansion into Eurasia, there would have been sufficient time for genetic drift to reduce heterozygosity dramatically before the Eurasia expansion. This Middle East isolation hypothesis provides a robust explanation for the relative homogeneity of European and Asian populations relative to African populations (see Figures 3A-B) and is supported by a recent maximum likelihood estimate of 140,000 years ago for the time of EURASIAN-WEST AFRICAN populations separation. Interestingly, a recent study of the Neandertal genome suggests that the non-African individuals, but not the Africans, contain similar amount of admixture (1-4%) with the Neandertals . The authors suggest that the admixture must have happened between the Neandertals with an ancestral non-African population before the Eurasian expansion. Given the fossil, archaeological, and genetic evidence, the Middle East isolation hypothesis warrants rigorous evaluation as whole-genome sequence data become available." ~ Toward a more uniform sampling of human genetic diversity: a survey of worldwide populations by high-density genotyping.,