North and South America was barren of people until, some Siberian “daring” individuals crossed over a bridge to step into America. The DNA collected from a large number of Native American groups spread across Canada to the pinnacle of South America was put through a meticulous and extensive relocation study by researchers from Harvard. They analyzed that 15,000 years ago, “First Americans“ inhabitants traversed in from Siberia after climbing past a land bridge during the Last Ice age. They did not land in America all at once. When the people turned up in America they came in 3 groups one by one.
Cutting edge technologies permitted the geneticists to investigate the past along with the linguists, archaeologists and the paleoanthropologists. They together collected data after detailed study of the tools, languages, arrowheads, teeth and skulls of these groups. “Geneticists, we’re sort of amateurs — we’re not steeped in the deep understanding of history the linguists and archeologists have, but we do have access to information they don’t," said David Reich, the study leader and a genetics professor at Harvard Medical School in conjunction with a science expert at the University College London.
The analysis shows “First Americans" inhabitants traversed in from Siberia after climbing past a land bridge during the Last Ice age. These people came in two successive journeys and are responsible for lending their bloodline to most Native Americans. The founding group interacted with these inhabitants and the interaction has showed up in the genetic analysis of the people presently residing in Greenland, Alaska and Canada.
Reich compared DNA from remains of the fossils with the present-day human set of chromosomes and traced that the Neanderthals had mated with humans. The same techniques are being used extensively to research lineage, inter mixing, and relocation of populations.
“It’s a different type of evidence — not as good at [establishing] dates, but much better about how people relate to each other,” he believed. “You can’t tell from remains that are left behind who gave rise to who.”
Other Scientists who had not been a part to the study said the results concerning the investigation of samples collected from approximately 750 Native Americans of today and Siberians agree they had migrated into America.
Scientists had more than 360,000 chromosome patterns of all the individuals where the DNA shows a discrepancy. They constructed a vague family tree showing times when groups split off and when intermingling in the populations may have taken place to study genetic variations.
The confirmed fact is ancient people have scattered and rushed southwards embracing the West coast. Dennis O’Rourke, an anthropology professor at the University of Utah feels “For me it suggests that as the data become richer and we have a better handle on patterns of diversity, we are seeing our reconstructions of past populations become more complex as well.”