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Don't worry, they're probably not. Denisovan admixture is minimal, and the more substantial admixture with Neanderthal genes appear to be evolutionarily selecte
by gwern 9y ago
Don't worry, they're probably not. Denisovan admixture is minimal, and the more substantial admixture with Neanderthal genes appear to be evolutionarily selected against, and the genetic correlations people have computed so far have generally been bad ones. I haven't seen a specific education-IQ/Neanderthal correlation reported yet, but no one has reported noting the education-IQ PGSes as being oddly enriched in Neanderthal variants, and the Neanderthal genetic correlation papers haven't said anything about education-IQ despite the PGSes being publicly available & on LD Hub etc, so arguing from silence, I think there's probably either no correlation or it's negative.
There's an interesting debate about why this is the case: were Neanderthals sufficiently distant from humans that their genetic variants tend to be incompatible, or was it because the smaller Neanderthal population made it harder to purge bad mutations so more of their variants were simply bad in general, or something else entirely?