Using 31 different population clusters from the Indian subcontinent I wanted to see if there are significant correlations (positive or negative) between the frequencies of any two haplogroups. Two positively correlated haplogroups may indicate a shared history and expansion, whereas a negative correlation may indicate opposite histories of those haplogroups. I considered the 5 major Indian haplogroups for the analysis, which are, R1A1, H, R2, J2 and L.
- -R1A1 increases then L increases
- -R2 increases then H decreases
- -R2 increase then L decreases
Indo-European castes (IE):
- -R2 increases then R1A1 decreases
Dravidian + IE castes
- R1A1 increases then H decreases
- R2 increases then R1A1 decreases
Some members of H were replaced by a Holocene population consisting of R1A1 and L. Some time later (possibility during the Neolithic), members for R2 expanded over an R1A1/L/H background population.
The full analysis can be downloaded here: