halfalp
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- Ethnic group
- Swiss
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- R-L2
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- J1c5a
These snps are highly susceptible to selection. It's the same reason why Horners are so dark skinned despite being sometimes close to 40% West Eurasian, and why SLC24A5 swept to reasonably high levels in the San in the last 2000 years. (They live in a part of Africa that gets less of the sun's rays than people like Nigerians or the Horn, which are closer to the equator.)
I know some Europeans find this hard to accept, but it is what it is.
Are you saying that human gonna develop SLC24A5 only by being away for sun? Without any founder effect?