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The authors discussed the results of study of population genetic structure of Khakass sub-ethnic groups indigenous population of the Republic of Khakassia. The gene pool is studied according to two classes of markers: autosomal DNA (CCR2*rs1799864, CCR5*rs333, ACE1*rs4646994, PLAT*rs4646972, noA25*rs, PV92*rs3138523, ApoA1*rs3138522, no B65*rs, no F13B*rs) and quasigenetic markers (surnames). Total sample size was 249 persons for autosomal DNA dataset, and 9693 persons for the surnames dataset. Four Khakass sub-ethnic groups Kachins, Koybals, Kyzyls, and Sagays were investigated. Both classes of markers provided similar results on the subdivision of Khakass sub-ethnic groups and genetic relationships between them. Analysis of autosomal DNA markers showed statistically significant differences of allele frequencies. Interpopulation genetic variation (GST) of the Khakass populations was 2.10%. The largest genetic distances were observed when comparing Sagays and Kyzyls (d = 0.032). The least genetic distances were observed when comparing samples of Kachins and Koybals (d = 0.032). According to the surnames dataset, the similarity index (Ri) is minimal in the pair "Sagays Kyzyls" and is maximal in a pair of "Kachins Koybals". Genetic distances characterizing the differences between sub-ethnic groups, decrease, and kinship coefficient, which reflects the similarity increases in the following series: Sagays, Kyzyls, Kachins, and Koybals.

GENETIC STRUCTURE OF THE KHAKASS SUB-ETHNIC GROUPS FROM AUTOSOMAL DNA MARKERS AND SURNAMES