Paleolithic human migrations in East Eurasia by sequencing Y chromosomes. S. Yan1,2, C. C. Wang1, L. Jin1,2 1) MOE Key Lab of Contemporary Anthorpology, Fudan University, Shanghai, China; 2) Computational Genetics, CAS-MPG Partner Institute for Computational Biology, Shanghai, China.
Paleolithic human migrations in East Eurasia remains largely unknown due to the lack of sufficient markers derived from the mutations that occurred during that time frame. To tackle this problem, using the sequence capturing, barcoding technology and next-generation sequencing, we identified more than 4,000 new SNPs encompassing most single copy non-recombining region of human Y chromosome. New clades for haplogroups O, C, N, D, and Q could be geographically located. Especially, a few star-like expansions were unveiled, showing strong population growth. The phylogeny of Haplogroup N was radically rearranged, and all the N individuals could now be categorized into either a northern clade N1 or southern clade N2, revealing a Paleolithic migratory routes of the ancestors of Uralic speaking populations. Haplogroup C, especially the East Eurasia-dominant clade C3, could also be separated into at least two ancient clades, suggesting Paleolithic migrations in East Asia. Three major clades under O, M117+, M134xM117, and 002611+, each could be now further classified into several subclades. With these new findings, we proposed the modified the routes and dates for human populations migration, especially those in Paleolithic time. A few Y-chromosomal expansions could now be linked to certain prehistoric cultures or ancestors of language families.
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