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Notes -
It's actually probably important to know, in that repeated incest is what drives genetic problems, so if I were a child of incest and more likely to carry recessive mutations I'd have been certain to marry one of the African or Chinese foreign exchange students to get as far away as possible.
This isn't how genetics works. Even if you are highly inbred, you can marry any member of your race who is not your relative and have as healthy babies as if you were not inbred. (Except if you're a woman and inbred phenotype affects pregnancy, but then outbreeding won't fix it either).
Maybe you know, maybe not, but incest doesn't increase number of recessive mutations at all, it increases chance of them to get in homozygote and make visible effect.
You can make argument that outbreeding is beneficial, but it won't actually depend on fixing recent inbreeding. With Africans, you'll be bringing some low IQ alleles and alleles for tropical environment that make no sense in temperate climate.
Since today it's possible to look at actual genes and being foreign student doesn't rule out they don't have recent ancestor with you, there is no reason for such far outbreeding.
This was mostly a joke about how easy it is for a white man to marry a Chinese or Nigerian foreign exchange student at any selective American college. Most likely outcome if I hadn't met my wife first, tbqh.
My most recent possible common ancestor with a Chinese girl would be before the Magyars left the steppe, and my most recent possible common ancestor with a Nigerian girl might be the Great Rift Valley.
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