By investigating DNA from teeth belonging to different chronological periods in eastern Siberia, researchers from the Archaeological research Laboratory has discovered an unusual deep continuity in the area. Photo: Natalya Kashuba & Vendela Kempe Lagerholm, Arkeological Research Laboratory.

Gulsah Merve Kilinc and Natalya Kashuba at the Archaeological Research Laboratory, Stockholm University, have explored the demographic history in eastern Siberia together with an international research team. They have investigated human mitochondrias from teeth chronologically distributed over the latest 15.000 years. The mitochondrial chromosome is located in another part of the cell from the genomic DNA, and maternally inherited.

The results suggest that much of the genetic variation have been in the area since people arrived and till at least the Iron Age. This type of continuity has yet not been seen anywhere else, usually genetic variation in an area constantly changes with migratory events.

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The study is published in Scientific Reports: www.nature.com