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Thread: How much ancient West Eurasian ancestry do Amerindians have?

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    How much ancient West Eurasian ancestry do Amerindians have?

    Wondering since almost half of Amerindian autosomal DNA is ANE/MA-1 related and MA-1 is supposedly to be West Eurasian component. So wondering how much West Eurasian ancestry do Amerindians really have? I have known for a while now that a 2014 genomic study that says
    Similarly, we find autosomal evidence that MA-1 is basal to modern-day western Eurasians and genetically closely related to modern-day Native Americans, with no close affinity to east Asians. This suggests that populations related to contemporary western Eurasians had a more north-easterly distribution 24,000 years ago than commonly thought. Furthermore, we estimate that 14 to 38% of Native American ancestry may originate through gene flow from this ancient population.
    It also mentioned in the paper that it used Karitiana as a pure sample for the Amerindian population.



    So do Amerindians like Karitiana have on average around 26-30% or 1/3-ish ancient West Eurasian ancestry?

    Just curious.
    Last edited by Tsakhur; 09-17-2017 at 03:00 PM.

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    Quote Originally Posted by Tsakhur View Post
    Wondering since almost half of Amerindian autosomal DNA is ANE/MA-1 related and MA-1 is supposedly to be West Eurasian component. So wondering how much West Eurasian ancestry do Amerindians really have? I have known for a while now that a 2014 genomic study that says It also mentioned in the paper that it used Karitiana as a pure sample for the Amerindian population.



    So do Amerindians like Karitiana have on average around 26-30% or 1/3-ish ancient West Eurasian ancestry?

    Just curious.
    I don't know if it is relevant but I fairly consistently get a few percent SW Ancient and around 1% described as Native American/Amerindian/Arctic Amerindian. I'm British so guessed this is something "Old" and similar.

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    Currently, ANE appears to be intermediate between West Eurasia and East Eurasia. It would be interesting to see how they will model deep relationships in their next papers.

    A Working Model of the Deep Relationships of Diverse Modern Human Genetic Lineages Outside of Africa
    Mark Lipson/David Reich et al (2017)



    The genetic structure of the world's first farmers Lazaridis et al (2016)

    S11.3 is branching for non-Basal Eurasians.

    Also from Lazaridis


    And, see also Working topology for Eurasian population structure - on Eurogenes


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    Quote Originally Posted by Observer View Post
    Currently, ANE appears to be intermediate between West Eurasia and East Eurasia. It would be interesting to see how they will model deep relationships in their next papers.

    A Working Model of the Deep Relationships of Diverse Modern Human Genetic Lineages Outside of Africa
    Mark Lipson/David Reich et al (2017)



    The genetic structure of the world's first farmers Lazaridis et al (2016)

    S11.3 is branching for non-Basal Eurasians.

    Also from Lazaridis


    And, see also Working topology for Eurasian population structure - on Eurogenes

    Do you know why Eastern Eurasian continuum is separated from Eastern Non-African/Onge in one of the diagrams?

    Do you think Native Americans have from 14-38% West Eurasian ancestry?

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    Quote Originally Posted by Tsakhur View Post
    Do you know why Eastern Eurasian continuum is separated from Eastern Non-African/Onge in one of the diagrams?
    New study about Paleolithic Tianyuan man from China by Melinda Yang et al may soon address this, based on this tweet from Pontus Skoglund, it will apparently feature detail model.

    Quote Originally Posted by Tsakhur View Post
    Do you think Native Americans have from 14-38% West Eurasian ancestry?
    If ANE is admixed then part of their 'ANE' admixture will be something like Proto-West Eurasian (pre-K14).

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