//Y-chromosome analysis reveals genetic divergence and new founding native lineages in Athapaskan-and Eskimoan-speaking populations

Y-chromosome analysis reveals genetic divergence and new founding native lineages in Athapaskan-and Eskimoan-speaking populations

Y-chromosome analysis reveals genetic divergence and new founding native lineages in Athapaskan-and Eskimoan-speaking populations

Author(s): Dulik, M.C., Owings, A.C., Gaieski, J.B., Vilar, M.G., Andre, A., Lennie, C., Mackenzie, M.A., Kritsch, I., Snowshoe, S., Wright, R. and Martin, J.
Journal: Proceedings of the National Academy of Sciences
Issue/Volume: 109(22)
Page(s): 8471-8476
Year: 2012

Abstract:

For decades, the peopling of the Americas has been explored through the analysis of uniparentally inherited genetic systems in Native American populations and the comparison of these genetic data with current linguistic groupings. In northern North America, two language families predominate: Eskimo-Aleut and Na-Dene. Although the genetic evidence from nuclear and mtDNA loci suggest that speakers of these language families share a distinct biological origin, this model has not been examined using data from paternally inherited Y chromosomes. To test this hypothesis and elucidate the migration histories of Eskimoan- and Athapaskan-speaking populations, we analyzed Y-chromosomal data from Inuvialuit, Gwich’in, and Tłįchǫ populations living in the Northwest Territories of Canada. Over 100 biallelic markers and 19 chromosome short tandem repeats (STRs) were genotyped to produce a high-resolution dataset of Y chromosomes from these groups. Among these markers is an SNP discovered in the Inuvialuit that differentiates them from other Aboriginal and Native American populations. The data suggest that Canadian Eskimoan- and Athapaskan-speaking populations are genetically distinct from one another and that the formation of these groups was the result of two population expansions that occurred after the initial movement of people into the Americas. In addition, the population history of Athapaskan speakers is complex, with the Tłįchǫ being distinct from other Athapaskan groups. The high-resolution biallelic data also make clear that Y-chromosomal diversity among the first Native Americans was greater than previously recognized.


Source Link: http://www.pnas.org/content/109/22/8471.short

Keywords

Peoples: Gwich’in, Inuvialuit, Native Americans, and Tłįchǫ | Places: Canada and Northwest Territory | Topics: Athapaskan-speaking population | DNA Type: Y-DNA

2016-11-10T03:20:48+00:00 November 10th, 2016|
  • Kenneth W Cornell

    awaiting results from my Big Y test. At this point I know I’ve gone from Haplogroup I M170 to L38 and positive on S2606.