LoLeL
02-09-2018, 10:15 AM
To study the male and female lineages of East Asian and European humans, we have sequenced 25 short tandem repeat markers on 453 Y-chromosomes and collected sequences of 72 complete mitochondrial genomes to construct independent phylogenetic trees for male and female lineages. The results indicate that East Asian individuals fall into two clades, one that includes East Asian individuals only and a second that contains East Asian and European individuals. Surprisingly, the European individuals did not form an independent clade, but branched within in the East Asians. We then estimated the divergence time of the root of the European clade as ∼41,000 years ago. These data indicate that, contrary to traditional views, Europeans diverged from East Asians around that time. We also address the origin of the Ainu lineage in northern Japan.
Humans are traditionally viewed as falling into three major populations, Africans, East Asians, and Europeans, with the latter two diverging from the African ancestors ∼55,000 years ago. We sequenced Y-STR makers in Y chromosome and collected complete mtDNAs for many East Asian and European individuals to reexamine that view. Phylogenetic trees of Y-STR makers and Mt genes suggest that the Europeans interbred with East Asians until ∼41,000 years ago. On the other hand, East Asians diverged from their African acestors ∼55,000 years ago. Therefore, we suggest that the European and East Asian lineages diverged ∼41,000 years ago.
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3971580/bin/evu027f4p.jpg
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3971580/
Humans are traditionally viewed as falling into three major populations, Africans, East Asians, and Europeans, with the latter two diverging from the African ancestors ∼55,000 years ago. We sequenced Y-STR makers in Y chromosome and collected complete mtDNAs for many East Asian and European individuals to reexamine that view. Phylogenetic trees of Y-STR makers and Mt genes suggest that the Europeans interbred with East Asians until ∼41,000 years ago. On the other hand, East Asians diverged from their African acestors ∼55,000 years ago. Therefore, we suggest that the European and East Asian lineages diverged ∼41,000 years ago.
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3971580/bin/evu027f4p.jpg
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3971580/