Question: Did the mutations that define haplogroup R1a and R1b both happen at the same time?
In other words, do R1a and R1b necessarily have the same age? I ask because every age estimate I have seen gives the same age for both (e.g. 22,800 YA). But couldn't R1b have split off first, and the first R1a individual have appeared only much later?
I guess the question applies equally to the split between other main haplogroups.
Best regards,
Jon
In other words, do R1a and R1b necessarily have the same age? I ask because every age estimate I have seen gives the same age for both (e.g. 22,800 YA). But couldn't R1b have split off first, and the first R1a individual have appeared only much later?
I guess the question applies equally to the split between other main haplogroups.
Best regards,
Jon