Many studies have repeatedly shown that there is much higher prevalence of R1a among the upper castes than the lower castes and that it is about twice as high among the Brahmins as among the scheduled castes and the scheduled tribes. So what we see is a genetic signature that is prevalent among Indo-European-language-speaking countries and that also has a strikingly elevated presence among the traditional custodians of the oldest layer of Indo-European languages in India: Sanskrit.
