This debate again
@anandkonda ?
The origins and affinities of the ∼1 billion people living on the subcontinent of India have long been contested. This is owing, in part, to the many different waves of immigrants that have influenced the genetic structure of India. In the most ...
www.ncbi.nlm.nih.gov
"However, admixture with West Eurasian males was greater than admixture with West Eurasian females, resulting in a higher affinity to European Y chromosomes.
"The high affinity of caste Y chromosomes with those of Europeans suggests that the majority of immigrating West Eurasians may have been males. As might be expected if West Eurasian males appropriated the highest positions in the caste system, the upper caste group exhibits a lower genetic distance to Europeans than the middle or lower castes."
Vast majority of North Indians share a common materal ancestry and Europe related MtDNA is very low in India.
"Less than 10% of the maternal lineages of the caste populations had an ancestor outside India in the past 12,000 years (Kivisild et al.
1999a, 1999b). mtDNA profiles from a larger set of populations all over the subcontinent have bolstered the view of fundamental genomic unity of Indians (Roychoudhury et al.
2001). In contrast, the Y-chromosome genetic distance estimates showed that the chromosomes of Indian caste populations were more closely related to Europeans than to eastern Asians (Bamshad et al.
2001). The tendency of higher caste status to associate with increasing affinities to European (specifically to eastern European) populations hinted at a recent male-mediated introduction of western Eurasian genes into the Indian castes' gene pool."
Source :
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC379225/