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Rhesus Negative blood is a mystery.
It makes no sense to have a blood type that actively seems to destroy non-Rhesus negative fetuses if it is simply an evolution of Rhesus positive blood alleles.
Rh- blood is pretty much anti-miscegenation genetics.
Rh- blood is found only in high quantities along the Atlantic coast, from the Berbers of Morocco to Basques (highest prevalence) to Scotland and Western Norway.
It is not Indo-European. It is not Neolithic farmer.
It overlaps in frequency with the settlements of the Cro-Magnon along the Atlantic coast.
Rather strange phenomenon isn't it. A blood type which exists de-facto only in Atlantic populations which directly makes mixing with Steppe and Farmer blood difficult.
Why would such a mutation develop if the Cro-Magnon was an evolutionary heir to Rh+ populations?
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