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Thread: Is "Basal Eurasian" an African or non-African genetic component?51 days old

  1. #31
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    ^Read the study. You will see.

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    Quote Originally Posted by beyoku View Post
    Who are the North East African related peoples in this study?
    "Guided by the PCA, we began by using three groups of individuals—present-day Dinka, ancient Chalcolithic-period individuals from Israel, and the ~4500 BP forager from Mota, southern Ethiopia —to represent distinct components of ancestry plausibly found in ancient and present-day eastern Africans, with present-day western Africans among the outgroups. [...] We use the Chalcolithic individuals in this study because we lack genetic data from a phylogenetically adjacent reference group from Egypt, Sudan/South Sudan, or the Horn. [...] Our qpAdm modeling reveals that the PN [Pastoral Neolithic] individuals had substantial proportions of all three ancestry components (~40% each for those represented by Dinka and by the Chalcolithic Israel individuals, and ~20% related to Mota, with no evidence of western African related ancestry. [...]

    Alternative model formulations in which we either use ancient individuals from Taforalt in Morocco in place of the Chalcolithic Israel group, or present-day Lemande from Cameroon in place of Dinka (with Dinka moved to the outgroup set), fit significantly worse for most test groups.

    From these results, we formulated a four-part hypothesis to explain the origins of the ancestries in the sampled eastern African groups. First, admixture in northeastern Africa, likely associated with the spread of pastoralism, created groups (as yet unsampled with ancient DNA) with approximately equal proportions of ancestry related to (1) present-day Nilotic speakers such as Dinka and Nuer, and (2) sampled ancient and present-day groups from northern Africa and the Levant. We refer to this combination as early northeastern African pastoralist-associated ancestry (henceforth “early northeastern pastoralist,” or ENP), and the two sub-components as EN1 and EN2. Second, descendants of these groups mixed with local foragers in eastern Africa, leading to the ~20% Mota-related ancestry in the PN individuals. Third, an additional period of Sudan-related gene flow occurred before the Iron Age and contributed to PIA groups. Fourth, close to the same time, western African-related ancestry related to present-day Bantu speakers (also seen in an individual buried on Pemba Island ~600 BP) appeared in the Rift Valley (notably at Deloraine Farm), in association with the spread of farming."

    https://reich.hms.harvard.edu/sites/...lNeolithic.pdf

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    ^No need to quote the entire passage. WHO are the North east African populations?

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    I don't know why there's anymore arguing that's too dumb at this point..

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