Can two dim-witted parents have clever kids?
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yep.
the genetic aspects of intelligence are polygenic, that is, they are able the interaction of many genes. so far about 500 have been identified in intelligence.
that’s a whole lotta interactions.
random genetic differences because, y’know, evolution, are the starting point.
then comes epigenetics, or how environmental factors interact with genes.
having a baseline of a brighter than average brain can be enhanced or nerfed by environmental conditions like if a kid is being starved by their parents either physically (food) or cognitively (not interacting with the toddler, or abusing the kid).
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