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[–] PreacherMikebrown 0 points 1 point (+1|-0) ago 

The more white genes a black has, the higher the IQ. Being black is absolutely tied to itelligence.

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[–] gudgoy2 ago 

But it's due to parallel traits. It's not as if the gene for melanin is what causes the difference. There's genes that cause higher intelligence when expressed a certain way,it's not the ones for melanin content.