It is not that there is no relationship between geographic ancestry and genetic makeup—the Wikipedia article you’re looking for is “Human Y-chromosome DNA haplogroup”—but the genetic differences across haplogroups are of negligible significance in any direct “some people are inherently less intelligent” sense even before you even get to the massive eyebrow raise that is the statement “intelligence is accurately measured by IQ tests,” upon which most of these claims depend. In practice any correlations emerging from haplogroups are dwarfed by those emerging from environmental factors such as
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