The "Long Live Baby" genome data tells the story of human migration

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that a human baby genome sequence that lived in Alaska about 11,500 years ago has been sequenced, the British Journal of Genetics reported On Monday. It is also the first direct genomic evidence to date that all Native American ancestors date back to the same source population during a single migration event in the late 1980s.
although it is generally believed that humans first settled in the Americas through the Bering Continental Bridge in the 1980s (early in the Geological Age), the exact time and manner remains a mystery. Fortunately, in 2013, scientists found the remains of two human babies at the site of Alaska's Xiangyang River, dating back about 11,500 years.
this time, a team of researchers at the University of Massachusetts at Massachusetts, Ben Porter, and the University of Copenhagen, Denmark, used genomics techniques to determine the entire genome sequence of one of the babies, USR1. Although the DNA samples of the other baby were not sufficient for genomic analysis, studies showed that the two were close relatives.
sequenced, they compared usR1 baby samples with previously measured contemporary and ancient Native American genomes and found that the baby was most recently related to today's Native Americans. They believe that the USR1 baby sample represents a very different population, called the "ancient white man", and that the ancestors of other Native Americans originated in a single initial population, which was first separated from the East Asians about 36,000 years ago, but whose gene flow continued until about 25,000 years ago.
These findings are consistent with the so-called "Bering Stranded Model", where humans had no choice but to "camp" when they reached the Bering Sea continental bridge, according to which offspring of a source population lived in East Bering until at least 11,500 years ago. But by then, another branch of Native Americans had settled in glacier-free areas of North America and divided into two groups, eventually becoming the ancestors of most Native Americans. (Source: Science and Technology Daily Zhang Mengran)