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A recent genetic link between Sami and the Volga-Ural region of Russia
Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Genetics and Pathology.
Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Genetics and Pathology.
2007 (English)In: European Journal of Human Genetics, ISSN 1018-4813, E-ISSN 1476-5438, Vol. 15, no 1, 115-120 p.Article in journal (Refereed) Published
Abstract [en]

The genetic origin of the Sami is enigmatic and contributions from Continental Europe, Eastern Europe and Asia have been proposed. To address the evolutionary history of northern and southern Swedish Sami, we have studied their mtDNA haplogroup frequencies and complete mtDNA genome sequences. While the majority of mtDNA diversity in the northern Swedish, Norwegian and Finnish Sami is accounted for by haplogroups V and U5b1b1, the southern Swedish Sami have other haplogroups and a frequency distribution similar to that of the Continental European population. Stratification of the southern Sami on the basis of occupation indicates that this is the result of recent admixture with the Swedish population. The divergence time for the Sami haplogroup V sequences is 7600 YBP (years before present), and for U5b1b1, 5500 YBP amongst Sami and 6600 YBP amongst Sami and Finns. This suggests an arrival in the region soon after the retreat of the glacial ice, either by way of Continental Europe and/or the Volga-Ural region. Haplogroup Z is found at low frequency in the Sami and Northern Asian populations but is virtually absent in Europe. Several conserved substitutions group the Sami Z lineages strongly with those from Finland and the Volga-Ural region of Russia, but distinguish them from Northeast Asian representatives. This suggests that some Sami lineages shared a common ancestor with lineages from the Volga-Ural region as recently as 2700 years ago, indicative of a more recent contribution of people from the Volga-Ural region to the Sami population.

Place, publisher, year, edition, pages
2007. Vol. 15, no 1, 115-120 p.
Keyword [en]
mtDNA, mitochondria, human evolution, population genetics, Sami
National Category
Medical and Health Sciences
Research subject
Genetics; Pathology
Identifiers
URN: urn:nbn:se:uu:diva-87686DOI: 10.1038/sj.ejhg.5201712ISI: 000242890600018PubMedID: 16985502OAI: oai:DiVA.org:uu-87686DiVA: diva2:133087
Available from: 2009-01-07 Created: 2009-01-07 Last updated: 2011-02-23Bibliographically approved

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Gyllensten, Ulf

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