Voices from Russia

Friday, 13 December 2013

Link Between Native Americans and Siberia Encoded in DNA History

00 Tlingit people in traditional regalia. Alaska USA. 13.12.13

Tlingit people of Alaska in traditional regalia

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Recently, a team of scientists, including seven researchers from Russia, revealed the results of a study on the DNA of the ancient inhabitants of Siberia during the Upper Palaeolithic period. Scientists were able to obtain new data on the early stages of human settlement in various continents, including the Americas. The research confirmed that the first inhabitants of the Americas, the Paleo-Indians, arrived via Beringia, an isthmus between Siberia and Alaska that existed at that time. Scientists consider Altai Krai the genetic birthplace of the first Americans. Their ancestors settled in Siberia and eventually reached the Americas. Whilst the first Americans were thought to have a close genetic relationship with East Asia, until now, scientists weren’t able to determine exactly to which people of the Old World their genes could be most closely be associated with. Through the study, scientists were able to make new conclusions about the makeup of ancient Native Americans.

The team, led by Maanasa Raghavan of the University of Copenhagen, studied the genome of the ancient inhabitants of Siberia and compared these data with the genes of other peoples. They published their results in Nature. The researchers took a DNA sample from the 24,000-year-old skeleton of an ancient inhabitant of Siberia, discovered during excavations in 1928–58 in Usolsky Raion (Irkutsk Oblast), near Malta station. Now, it’s part of the State Hermitage Museum collection. Scientists conducted DNA sequencing on the remains and compared the data with the genomes of individuals belonging to 11 modern ethnic groups, four Eurasian groups (ancestors of modern Mari, Tajiks, Avars, and East Indians), as well as with the genome associated with Denisovans, a subspecies of Homo Sapiens discovered recently in the Altai Mountains. The results showed how the Karitiana, an indigenous people from Brazil, are genetically close to ancient Siberians.

From these results, the study concluded that genes typical of the people of West Eurasia came to the Americas earlier than previously believed… namely 24,000 years ago, during the Upper Palaeolithic period. Furthermore, the data revealed why Native Americans carry haplogroup X, a mitochondrial DNA haplogroup commonly occurring among the peoples of western Eurasia, but not found among East Asians. Lyudmila Osipova, co-author of the study and head of the Population Ethno-Genetics Laboratory at the Institute of Cytology and Genetics SB RAN, said, “The results refer to the early stages of peopling of the continents, particularly Siberia and the Americas. In addition, they have indirect links to the issues of race genesis, although scientists discuss the matter cautiously. However, the issue is biological in nature and deeply connected to the topic of adaptation of human populations and to their different living conditions in different climatic zones of the globe”.

Osipova argued that despite the relatively good degree of research conducted by geneticists on the early peopling of our planet and the identification of early human migration patterns, life is more complicated than any taxonomy, saying, “The question is… ‘At what level of organisation were race genesis processes taking place… Homo sapiens, or, even at earlier stages?’ There are a lot of discoveries still to be made”. According to Osipova, the study confirms an earlier hypothesis about the origins of Native Americans, and provides a great deal of fundamental knowledge on lesser known aspects of migrations, including the movements of the people belonging to the European type towards the territory of Siberia in ancient times.

1 December 2013

Yana Khlyustova

Russia Behind the Headlines

http://rbth.ru/science_and_tech/2013/12/01/link_between_native_americans_and_siberia_encoded_in_dna_his_32159.html

 

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