The medieval Mongolian roots of Y-chromosomal lineages from South Kazakhstan.

The Y-chromosomal variation in South Kazakh clans indicates their common origin in 13th-14th centuries AD, in agreement with the traditional genealogy. Though genetically there were at least three ancestral lineages instead of the traditional single ancestor. The majority of the Y-chromosomal lineages of South Kazakhstan was brought by the migration of the population related to the medieval Niru'un Mongols.