Haplogroup CT (Y-DNA)
In human genetics, Haplogroup CT is a Y-chromosome haplogroup, defining one of the major lines of common ancestry of humanity along father-to-son male lines.
Men within this haplogroup have Y chromosomes with the SNP mutation M168, along with P9.1 and M294. These mutations are present in all modern human male lines except A and B, which are both found almost exclusively in Africa.