Originally posted by Johnserrat
Excuse me if I am wrong, but the percentage of I1a in Scandinavia most certainly exceeds 16%.
Therefore, the prima facie evidence is that the CCR5 allele cannot be equivalent or even nearly equivalent to the incidence of y-haplogroup I1a in Scandinavia. In other words, it cannot possibly be true that I1a=CCR5.
The fact is, we do not know how many Scandinavian I1as have that allele. Those that do are members of a select minority. Even where the CCR5 allele reaches its high of 16%, that simply means that 84% of the population does not carry it.
There is absolutely no evidence that the bubonic plague had a greater impact on R1bs than it did on I1as or vice versa. There are an awful lot of R1bs in Europe today. Based on that fact, it certainly seems that the plague did not single out R1bs.
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