Africa African Americans African Forager analyzed ancestral population ancient DNA ancient DNA data Ancient North Eurasians archaeological archaeologists archaic humans Asia Basal Eurasians biological bones Cavalli-Sforza Cave chromosome contributed Corded Ware culture Denisovans descend differences diversity East Asians eastern Eurasians Europe European hunter-gatherers expansion farmers fifty thousand five thousand FOXP2 frequency genes genetic data genetic variation geneticists genome genome revolution Genome Sequence genome-wide groups Guineans Human Genetics human populations hunter-gatherers India individuals Indo-European languages interbreeding islands Journal of Human laboratory Lazaridis lineage males migration mitochondrial DNA mixed mixture modern humans mutations Native American Native American populations natural selection Neanderthal ancestry Neanderthals Neanderthals and modern non-Africans northern occurred origin Pääbo Paleo-Eskimos past patterns percent population bottleneck population history possible present-day humans Reconstructing region samples shared showed Siberia skeletons Skoglund South southern spread steppe sub-Saharan thousand years ago tion traits Upper Paleolithic West Eurasians whole-genome Y chromosomes Yamnaya