[decimon]

What’s the haplogroup in question?

I am haplessly inadequate in reply. Perhaps blam can spare you a gene.

[blam]

Genetics Of India - Y-Chromosome DNA - Mitochondrial DNA - Research Into The Racial Origin Of India - Haplogroup H (Y-DNA) Is Common

Y-chromosome DNA :

Y-Chromosome DNA Y-DNA represents the male lineage, The Indian Y-chromosome pool may be summarized as follows where haplogroups R1a, H, R2, L & NOP comprise generally more than 80% of the total chromosomes.[3]

H ~ 30% R2 ~ 15%
L ~ 10%
NOP ~ 10%
Other Haplogroups 15%

Mitochondrial DNA :

Mitochondrial DNA mtDNA represents the female lineage The Indian mitochondrial DNA which is primarily made up of Haplogroup M [4]

Haplogroup M ~ 60%
Haplogroup UK ~ 15%
Haplogroup N ~ 25% (Excluding UK)

(The most common mtDNA is Europe is haplogroup 'H'. The most common yDNA in Europe is R1b.)