Göktürks
Genetics

A genetic study published in Nature in May 2018 examined the remains of four elite Türk soldiers buried between ca. 300 AD and 700 AD. 50% of the samples of Y-DNA belonged to the West Eurasian haplogroup R1, while the other 50% belonged to East Eurasian haplogroups Q and O. The extracted samples of mtDNA belonged mainly to East Eurasian haplogroups C4b1, A14 and A15c, while one specimen carried the West Eurasian haplogroup H2a. The authors suggested that central Asian nomadic populations may have been Turkicized by an East Asian minority elite, resulting in a small but detectable increase in East Asian ancestry. However, these authors also found that Türkic period individuals were extremely genetically diverse, with some individuals being of complete West Eurasian descent. To explain this diversity of ancestry, they propose that there were also incoming West Eurasians moving eastward on the Eurasian steppe during the Türkic period, resulting in admixture.

A 2020 study analyzed genetic data from 7 early medieval Türk skeletal remains from Turkic Khaganate burial sites in Mongolia. The authors described the Türk samples as highly diverse, carrying on average 40% West Eurasian, and 60% East Eurasian ancestry. West Eurasian ancestry in the Türks combined Sarmatian -related and BMAC ancestry, while the East Eurasian ancestry was related to Ancient Northeast Asians. The authors also observed that the Western Steppe Herder ancestry in the Türks was largely inherited from male ancestors, which also corresponds with the marked increase of paternal haplogroups such as R and J during the Türkic period in Mongolia. Admixture between East and West Eurasian ancestors of the Türkic samples was dated to 500 AD, which is 8 generations prior. Three of the Türkic-affiliated males carried the paternal haplogroups J2a and J1a, two carried haplogroup C-F3830, and one carried R1a-Z93. The analyzed maternal haplogroups were identified as D4, D2, B4, C4, H1 and U7.

A 2023 study published in the Journal of Systematics and Evolution analyzed the DNA of Empress Ashina (551–582), a royal Göktürk and immediate descendant of the first Khagans, whose remains were recovered from a mausoleum in Xianyang, China. The authors determined that Empress Ashina belonged to the North-East Asian mtDNA haplogroup F1d. Approximately 96-98% of her autosomal ancestry was of Ancient Northeast Asian origin, while roughly 2-4% was of West Eurasian origin, indicating ancient admixture, and no Chinese ("Yellow River") admixture. The results are consistent with a North-East Asian origin of the royal Ashina family and the Göktürk Khaganate. However, the Ashina did not show close genetic affinity with central-steppe Türks and early medieval Türks, who exhibit a high (but variable) degree of West Eurasian ancestry, which indicates that there was genetic sub-structure within the Türkic empire. For example, the ancestry of early medieval Turks was derived from Ancient Northeast Asians for about 62% of their genome, while the remaining 38% was derived from West Eurasians (BMAC and Afanasievo), with the admixture occurring around the year 500 CE.

The Ashina was found to share genetic affinities to post-Iron Age Tungusic and Mongolic pastoralists, and was genetically closer to East Asians, while having heterogeneous relationships towards various Turkic-speaking groups in central Asia, suggesting genetic heterogeneity and multiple sources of origin for the population of the Turkic empire. This shows that the Ashina lineage had a dominating contribution on Mongolic and Tungusic speakers but limited contribution on Turkic-speaking populations. According to the authors, these findings "once again validates a cultural diffusion model over a demic diffusion model for the spread of Turkic languages" and refutes "the western Eurasian origin and multiple origin hypotheses" in favor of an East Asian origin for the royal Ashina family.

Two Türk remains (GD1-1 and GD2-4) analysed in a 2024 paper, were found to display only little to no West Eurasian ancestry. One of the Türk remains (GD1-1) was derived entirely from an Ancient Northeast Asian source (represented by SlabGrave1 or Khovsgol_LBA and Xianbei_Mogushan_IA), while the other Türk remain (GD2-4) displayed an "admixed profile" deriving c. 48−50% ancestry from Ancient Northeast Asians, c. 47% ancestry from an ancestry maximised in Han Chinese (represented by Han_2000BP), and 3−5% ancestry from a West Eurasian source (represented by Sarmatians). The GD2-4 belonged to the paternal haplogroup D-M174. The authors argue that these findings are "providing a new piece of information on this understudied period".
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