蒙古人有多重基因來源。
發現與芬蘭人有聯系，說明歐亞大陸北方在過去有基因交流。
總的來說，北亞 東亞 東南亞之間比較接近，這三者之間的差異小于他們與南亞和大洋洲的差異。

倒是測測古代人基因呀?

同一天（2018年11 月5日）在Proceedings of the National Academy of Sciences（PNAS）發表的一篇文章報告，研究人員測了從22具在蒙古國庫蘇古爾（Kh?vsg?l）省發現的古尸上采的DNA，證實那些古尸都來自東亞人，已有初期牧業的跡象，但仍缺乏乳糖代謝的功能。
Bronze Age population dynamics and the rise of dairy pastoralism on the eastern Eurasian steppe
www.pnas.org | Choongwon Jeong, Shevan Wilkin, Tsend Amgalantugs, Abigail S. Bouwman, William Timothy Treal Taylor, Richard W. Hagan, Sabri Bromage, Soninkhishig Tsolmon, Christian Trachsel, Jonas Grossmann, Judith Littleton, Cheryl A. Makarewicz, John Krigbaum, Marta Burri, Ashley Scott, Ganmaa Davaasambuu, Joshua Wright, Franziska Irmer, Erdene Myagmar, Nicole Boivin, Martine Robbeets, Frank J. Rühli, Johannes Krause, Bruno Frohlich, Jessica Hendy, and Christina WarinnerPNAS published ahead of print November 5, 2018 https://doi.org/10.1073/pnas.1813608115?
Abstract: Recent paleogenomic studies have shown that migrations of Western steppe herders (WSH) beginning in the Eneolithic (ca. 3300–2700 BCE) profoundly transformed the genes and cultures of Europe and central Asia. Compared with Europe, however, the eastern extent of this WSH expansion is not well defined. Here we present genomic and proteomic data from 22 directly dated Late Bronze Age burials putatively associated with early pastoralism in northern Mongolia (ca. 1380–975 BCE). Genome-wide analysis reveals that they are largely descended from a population represented by Early Bronze Age hunter-gatherers in the Baikal region, with only a limited contribution (～7%) of WSH ancestry. At the same time, however, mass spectrometry analysis of dental calculus provides direct protein evidence of bovine, sheep, and goat milk consumption in seven of nine individuals. No individuals showed molecular evidence of lactase persistence, and only one individual exhibited evidence of >10% WSH ancestry, despite the presence of WSH populations in the nearby Altai-Sayan region for more than a millennium. Unlike the spread of Neolithic farming in Europe and the expansion of Bronze Age pastoralism on the Western steppe, our results indicate that ruminant dairy pastoralism was adopted on the Eastern steppe by local hunter-gatherers through a process of cultural transmission and minimal genetic exchange with outside groups.

從論壇看帖這個水平而言，蒙古族至少可以再細分3類以上差異比較大的 。