Ancient DNA evidence reveals two unknown migrants from north to south America – ScienceDaily


The international research team has used the GMD data to revise the history of Central and South America. The DNA analysis of 4900 men, Belize, Brazil, Central Andes, and South-South America have created that the majority of the Central and South American ancestors are North America, which is one of the migrants living in the Bering Strait crossing 15,000 years ago.

The evidence presented in the journal on November 8th Cell, Shows that two of the previously unrecognized flows of gene precipitation from North and South America, within one of these linear lines, one of which later changed the main population, which started at least 9,000 years ago.

"Our activity has multiplied the number of ancient genomes from these territories by about 20, giving us an indigenous history of American history," says David Reich Institute of Health at Harvard Medical School and Howard Hughes. "This extensive data gives the general origin of the North, Central and South Americans, as well as two unknown genetic exchanges between North and South America."

"Almost all Central and South Americans emerged from at least three branches of radiation like the first row star," says Archosologist Kosimo Post, the archaeologist at Max Planck Institute of Human History. "This means that almost all the ancestors of Central and South Americans have come from the same source of population, which is still diversified in South America, a large part of DNA evidence based on today's people is unusual, emphasizing the ancient DNA data."

Genome Analysis also named new opinions about people with Clavic culture that were spread mainly in North America 13,000 years ago. Clovis's archaeological evidence shows that the clovis artefacts spread to South America. But when researchers used genomes to generate and produce previously published genomes from the genome of the 13000-year-old genome, which was studied in early and southern America, between 9000 and ~ 11,000 years ago, they noticed an important common ancestor. It was suggested that people who followed the cultivation of the clown culture had great influence over the greater fathers in the south, which are the unmanned stone weapons.

"We do not expect that we have been able to find people who are related to cloning culture in South America," said Dr Natan Nakakuk, Doctor of Harvard Reich Laboratory. "But apparently the extension Clovis-associated Lineage continue to be part of Central and South America."

The paper concludes that the lines associated with this clause have made a significant contribution to the Brazilian lago Santa from a group of 9,000-10,000 years of age, a hypothetical hypothesis that people living on these sites are migrating from Asia. The authors also found the genetic approach of Clovis older than an 11,000-year-old person from Chile and a little younger, more than 9,000 people from Belize.

Almost 9000 years ago, along with ancient samples of Peru, authors have discovered almost complete disappearance of associate ancestors in Central and South America, marked the replacement of the remarkable population. The replacement of large – scale population is a process that archaeologists are not expected to expect, "says Reich." This is an interesting example of how old DNA surveys can reveal events in the past, which has not been confirmed and therefore. "

Researchers have also shown that, like the Europe and Africa, the surplus continuity, after the turnout of this great population, compared to the world's largest. "It is worth noting long before and after skeletons of South Americans today," says Posth. For example, the modern cape and Aymara of the central Andes can discover the traces of their ancestors in the ancient Cuncaicha, which is 9,000 years old, is a continuity rather than in other continents.

Researchers recognize that there is a lot more work to do in the history of American history.

"We are very enthusiastic about the prospect of greater understanding of America's population history, but it's still a great geographical and chronological hole in the region," Rachel says. "We want to keep more genetic material before and later, and from other countries such as Colombia, Venezuela and other parts of Brazil, we also want to study the evolution of genetic traits over time".

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