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Mitogenomics of modern Mongolic-speaking populations

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Abstract

Here, we present a comprehensive data set of 489 complete mitogenomes (211 of which are new) from four Mongolic-speaking populations (Mongols, Barghuts, Khamnigans, and Buryats) to investigate their matrilineal genetic structure, ancestry and relationship with other ethnic groups. We show that along with very high levels of genetic diversity and lack of genetic differentiation, Mongolic-speaking populations exhibit strong genetic resemblance to East Asian populations of Chinese, Japanese, and Uyghurs. Phylogeographic analysis of complete mitogenomes reveals the presence of different components in the gene pools of modern Mongolic-speaking populations—the main East Eurasian component is represented by mtDNA lineages of East Asian, Siberian and autochthonous (the Baikal region/Mongolian) ancestry, whereas the less pronounced West Eurasian component can be ascribed to Europe and West Asia/Caucasus. We also observed that up to one third of the mtDNA subhaplogroups identified in Mongolic-speaking populations can be considered as Mongolic-specific with the coalescence age of most of them not exceeding 1.7 kya. This coincides well with the population size growth which started around 1.1 kya and is detectable only in the Bayesian Skyline Plot constructed based on Mongolic-specific mitogenomes. Our data suggest that the genetic structure established during the Mongol empire is still retained in present-day Mongolic-speaking populations.

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Acknowledgements

We are grateful to all the participants of this study. We wish to thank Alexandra Malyarchuk (Biology Faculty, Lomonosov Moscow State University) for her help. This study received support from the Government of the Russian Federation (grant No. 14.W03.31.0016 “Dynamics of Peoples and Empires in the History of Inner Asia”).

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Correspondence to Miroslava Derenko.

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All procedures performed in studies involving human participants were in accordance with the ethical standards of the institutional and/or national research committee and with the 1964 Helsinki declaration and its later amendments or comparable ethical standards.

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Informed consent was obtained from all individual participants included in the study.

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Communicated by Shuhua Xu.

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Derenko, M., Denisova, G., Dambueva, I. et al. Mitogenomics of modern Mongolic-speaking populations. Mol Genet Genomics 297, 47–62 (2022). https://doi.org/10.1007/s00438-021-01830-w

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  • DOI: https://doi.org/10.1007/s00438-021-01830-w

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