Researchers have sequenced the genome of a women who lived 14,000 years ago in China, and the results add to evidence for the East Asian ancestry of Native Americans
at the Kunming Institute of Zoology at the Chinese Academy of Sciences and his colleagues have established that Mengzi Ren was a femaleThe team sequenced a fraction of the total genome, just 100 million DNA bases, but this was enough to establish the individual’s species-level identity.“It was a really exciting moment,” says Su. “It is difficult to find ancient DNA in such a sample.
By then comparing the genome of Mengzi Ren with ancient genomes from around the world, the team revealed genetic similarities between the individual and living people of east Asian ancestry, as well as Native American people. This suggests Mengzi Ren was related to ancient populations in east Asia that contributed to Native American ancestry.
The east Asian ancestry of Native Americans has previously been inferred by analysing the DNA of living people. “This is the first time we have sequenced an ancient east Asian genome from the time when people were migrating into America, helping to confirm the east Asian ancestry of Native Americans,” says Su.Based on this genetic analysis, the researchers speculate that some of these ancestors of Native Americans may have travelled north along the coastline of present-day eastern China, as well as through the Japanese islands, before crossing into America from Siberia.
“This work is very exciting, as it shows how the settlement of east Asia is linked to the peopling of America,” saysShe adds that there is also evidence that some members of the founding population that entered the Americas dispersed westwards back into east Asia.
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