Previous studies have suggested that the human Y-chromosome haplogroup Q1a1a-M120, a widespread paternal lineage in East Asian populations, originated in South Siberia. However, much uncertainty remains regarding the origin, diversification, and expansion of this paternal lineage.
To explore the origin and diffusion of paternal Q-M120 lineages in East Asia
Subjects and methods:
We generated 26 new Y chromosome sequences of Q-M120 males and co-analysed 45 Y chromosome sequences of this haplogroup. We reconstructed a highly revised phylogenetic tree of haplogroup Q-M120 with age estimates. Additionally, we performed a comprehensive phylogeographic analysis of this lineage including 15,007 samples from 440 populations in eastern Eurasia.
We revealed an ancient connection of this lineage with populations in Siberia. However, this paternal lineage experienced an in-situ expansion between 5,000 and 3,000 years ago in northwestern China. Ancient populations with high frequencies of Q-M120 were involved in the formation of ancient Huaxia populations before 2,000 years ago; this haplogroup eventually became one of the founding paternal lineages of modern Han populations.
We provided a clear pattern about the origin and diffusion process of haplogroup Q1a1a-M120, as well as the role of this paternal lineage during the formation of ancient Huaxia populations and modern Han populations.
- Wei, LH, Sun, N., Ma, PC., Yan, S., Wen, SQ., Sun, C. (2019). Phylogeography of Y-chromosome haplogroup Q1a1a-M120, a paternal lineage connecting populations in Siberia and East Asia. Annals of Human Biology, -, -.
Peoples: East Asians | Places: East Asia and Siberia | Topics: East Asia, Q1a1a-M120, Siberia, and Y-chromosome | DNA Type: Y-DNA and Y-SNP