Friday, June 2, 2017

Phylogeny of Y-chromosome haplogroup C3b-F1756, an important paternal lineage in Altaic-speaking populations

Lan-Hai Wei et al.,
Journal of Human Genetics,
Short Communication,
1 June 2017
(Link)

Abstract

In previous studies, a specific paternal lineage with a null value for the Y-chromosome short tandem repeat (Y-STR) marker DYS448 was identified as common among Mongolic- and Turkic-speaking populations. This paternal lineage (temporarily named C3*-DYS448del) was determined to be M217+, M93–, P39–, M48–, M407–, and P53.1–, and its origin and phylogeny remain ambiguous. Here, we analyzed Y-chromosome sequences of 10 male that are related this paternal lineage and redefined it as C3b1a1a1a-F1756 (C3b-F1756). We generated a highly revised phylogenetic tree of haplogroup C3b-F1756, including 21 sub-clades and 360 non-private Y-chromosome polymorphisms. Additionally, we performed a comprehensive analysis of the C3*-DYS448del lineage in eastern Eurasia, including 18270 samples from 297 populations. Whole Y-chromosome sequences, Y-STR haplotypes, and frequency data were used to generate a distribution map, a network, and age estimations for lineage C3*-DYS448del and its sub-lineages. Considering the historical records of the studied populations, we propose that two major sub-branches of C3b-F1756 may correspond to early expansions of ancestors of modern Mongolic- and Turkic-speaking populations. The large number of newly defined Y-chromosome polymorphisms and the revised phylogenetic tree for C3b-F1756 will assist in investigation of the early history of Altaic-speaking populations in the future.

Supplemental Figure S1

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