The first time I have paid major attention to anything related to associations between rhesus negative blood and haplogroups, was when I have noticed the changes over the millennia within the Basque population.
49% of today’s Basque population has mtDNA H. The frequencies of mtDNA J and K are low now, they also were 1,500 years ago, but they were way higher 5,000 years ago. Talking 18-24% frequencies each.
While over the millennia, major changes in mtDNA frequencies in Europe have taken place, we have not seen complete replacements of previously dominant haplogroup by previously absent ones as we have in many y-DNA examples showing invasions including the killing of men and mating with the women of the fallen.
When looking at mtDNA frequencies among the Yamnaya, we notice that both, no change as major in y-DNA changes had taken place, yet a significant increase of mtDNA H and major decrease of mtDNA T1 and T2 since then have taken place.
Which female haplogroups are associated with being rhesus negative?
