Genomic and cranial phenotype data support multiple modern human dispersals from Africa and a southern route into Asia

recent genetic studies… suggest a “southern route” dispersal into Asia as early as the late Middle Pleistocene, followed by a separate dispersal into northern Eurasia.

Here we test these competing out-of-Africa scenarios by modeling hypothetical geographical migration routes and assessing their correlation with neutral population differentiation, as measured by genetic polymorphisms and cranial shape variables of modern human populations from Africa and Asia.

We show that both lines of evidence support a multiple-dispersals model in which Australo-Melanesian populations are relatively isolated descendants of an early dispersal, whereas other Asian populations are descended from, or highly admixed with, members of a subsequent migration event.

via Genomic and cranial phenotype data support multiple modern human dispersals from Africa and a southern route into Asia.

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