
Originally Posted by
Bengali
Thanks so much for the response! I'm quite certain that my Q did not come with the Islamic era. There is one other Q that shares my haplogroup (Q-YP502) and I think that person is very likely from Kerala (based on checking the mtdna) and I think either a Nair or a Brahmin (about 50% of Pathanamthitta Nairs have U1a1c1d, and the mtDNA for the Q-YP502 sample that shares my haplogroup is U1a1c1d2b). I don't think steppe lineages are widespread in South India, so I can't think of any other reason why haplogroup Q would come up. In addition, there is a group of Iyer Brahmins in Kerala called Brahacharanam, who have 19% Q-M242, and although they don't have more resolution of that haplogroup, I suspect it's the one that I share.
I was trying to figure out the mystery of why a Brahmin or a Nair from Kerala would share a haplogroup with a Bengali Muslim from Bangladesh in the last 2100 years...at the very least I'm very confident that it's from Kerala - not as certain that it's a Brahmin or a Nair but I can't think of any other groups in Kerala that would have steppe lineages AND share U1a1c1d mtDNA. In the clade above mine (Q-Z36070) there's one other Bangladeshi who has minor increased steppe admixture according to Monkey D Luffy, and the clade above mine (Q-FT310425) there is a person from Turkey. I also checked all the ancient samples and it lines up really well with the Indo European expansion. Hence why I thought that the groups most likely for the other Q-YP502 are Brahmins and Nairs. And since there are no Nairs in Bengal, I thought that perhaps it was Brahmin in origin. Do let me know if my logic here doesn't make sense!
If there's any other reason why there would be two samples sharing a relatively recent TMRCA (2100) years from South India and Bangladesh, and is steppe in origin, please let me know! I just want to try to find out the truth.