Haplogroup J1 (Y-DNA)
In human genetics, Y DNA haplogroup J-M267 is a sub-haplogroup of Y-DNA haplogroup J-P209, along with its sibling clade Y DNA haplogroup J-M172. Men from this lineage share a common paternal ancestor, which is demonstrated and defined by the presence of the SNP mutation referred to as M267, which was announced in Cinnioğlu et al. (2004). This haplogroup is found today in significant frequencies in many areas in order near the Middle East. For example it is among the most frequent haplogroups in Arabian Peninsula, and parts of the Caucasus, Sudan and the Horn of Africa. It is also found in high frequencies in parts of North Africa and Jews in general (especially Jews with Cohen surnames). It can also be found much less commonly, but still occasionally in significant amounts, in Europe and as far east as the Central Asia and mainly among Sayyid in the Indian Subcontinent, Iran and Iraq.