>>513412039
>A study published in the Nature journal in 2018 concluded that Indigenous Americans descended from a single founding population which initially divided from East Asians about ~36,000 (±1,500) years BP, with gene flow between this divided group of Ancestral Indigenous Americans and Siberians persisting until about ~25,000 (±1,100) years BP, before merging with Ancient North Eurasians and subsequently becoming isolated in the Americas or Beringia at ~22,000 years BP. Northern and Southern American Indigenous sub-populations split from each other at roughly ~17,500 to 14,600 years BP. There is also some evidence for a back-migration from the Americas into Siberia after ~11,500 years BP
>A study published in the Cell journal in 2019, analysed 49 ancient Indigenous American samples from all over North and South America, and concluded that all Indigenous American populations descended from a single ancestral source population which divided from Ancient East Asians, and admixed with Ancient North Eurasians (ANE), and gave rise to the "Ancestral Indigenous Americans", which later diverged into the various Indigenous groups. The authors further dismissed previous claims for the possibility of two distinct population groups among the peopling of the Americas. Both Northern and Southern Indigenous Americans are closest to each other and do not show evidence of admixture with hypothetical previous populations
>Overall, the 'Ancestral Native Americans' descended from the admixture of an Ancient East Asian lineage, and a Paleolithic Siberian population known as Ancient North Eurasians. Ancestral Native Americans are most closely related to 'Ancient Paleo-Siberians' and 'Ancient Beringians'