One thing that Zack Ajmal’s readers have done enough over at Harappa is closely examine the treasure-trove of data he’s assembled. I decided to “go public” with two obvious inferences which seem to jump out from the data to me at this point:
– Syrian Christians from Kerala are not by and large descended from Nambudiri Brahmins. This never made sense demographically, since there seem to be an order of magnitude more Christians than Brahmins in Kerala.
– I believe that South Indian Brahmins derive from a particular homogeneous ancestral population, with a dominant element from one North Indian Brahmin community, and admixture from an indigenous elite Dravidian-speaking population. But the strong homogeneity across various regions indicates relatively robust endogamy since that initial period.
I assume in the next few years all the elaborate fantasies of various Indian caste groups will be disabused. On the other hand, after looking at the Jatt results I am more likely to credit the idea that they are in part derived from relatively recent migrants from the Northwest of India.