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[–]cisheteroscumWhite Nationalist 11 insightful - 1 fun11 insightful - 0 fun12 insightful - 1 fun -  (0 children)

The heritability of IQ in adulthood is 0.8 in Western countries

https://en.wikipedia.org/wiki/Heritability_of_IQ#Estimates

Indicating genes are responsible for about 80% of the variance in IQ scores. Education, nutrition definitely matter to a degree - just not in any relevant sense for racial IQ scores in Western countries.