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Thread: East Asian problems with "Out of Africa"

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    Post Re: East Asian problems with "Out of Africa"

    Quote Originally Posted by Scoob
    At this point, the genetic preponderance of evidence indicates that the Out of Africa model (where humans replaced archaic sapiens in the Old World) is overall correct. Multiregionalism is basically dead in academia, except maybe as a minor footnote to OOA (i.e., some small amount of archaic sapiens DNA has been integrated into modern humans.)
    The reality of the origin of moderns in Africa is extremely well supported, however the anatomical evidence for regional continuity is strong and it seems to be growing.

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    Post Re: East Asian problems with "Out of Africa"

    Quote Originally Posted by atlanto-med
    The reality of the origin of moderns in Africa is extremely well supported, however the anatomical evidence for regional continuity is strong and it seems to be growing.
    Perhaps archaic sapiens contributed very few genes to modern humans, but these genes had a strong effect on phenotype.

    What makes this possibility doubtful is that when mixing occurs, it tends to leave its mark throughout a genome, and would thus include many genes that don't apparently influence phenotype.

    The other possibility is that somehow there were strong selective forces on the continents that independently reproduced similar phenotypes in both archaic sapiens and modern sapiens.

    We need much more genetic data to determine this - especially if there is archaic admixture at a very low level.
    "Whatever is done from love always occurs beyond good and evil." - F. Nietzsche

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    Post Re: East Asian problems with "Out of Africa"

    Quote Originally Posted by Scoob
    Perhaps archaic sapiens contributed very few genes to modern humans, but these genes had a strong effect on phenotype.

    What makes this possibility doubtful is that when mixing occurs, it tends to leave its mark throughout a genome, and would thus include many genes that don't apparently influence phenotype.

    The other possibility is that somehow there were strong selective forces on the continents that independently reproduced similar phenotypes in both archaic sapiens and modern sapiens.

    We need much more genetic data to determine this - especially if there is archaic admixture at a very low level.
    I don't know about the new research using autosomal markers, but the evidence from studies of parental lineages doesn't show evidence of admixture except in an Upper Paleolithic Australian. However, such lineages become lost over time so don't provide evidence against regional admisture. I think everyone agrees that any regional admixture was limited or moderns wouldnt be so closely related to each other.

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