The Indian origin of paternal haplogroup R1a1* substantiates the autochthonous origin of Brahmins and the caste system.
Sharma S, Rai E, Sharma P, Jena M, Singh S, Darvishi K, Bhat AK, Bhanwer AJ, Tiwari PK, Bamezai RN. The Indian origin of paternal haplogroup R1a1* substantiates the autochthonous origin of Brahmins and the caste system. J Hum Genet. 2009 Jan; 54(1):47-55.