I haven't spaced on this, but I'm going to take a beat to generate a more rigorous reply. In the meantime: I think the evidence, both from twin studies and from genomics, for genetic determination of intelligence is very weak, has gotten weaker, and describes an effect too small to be relevant to the gaps we're discussing in this story; bringing racial IQ science into a discussion like this is arson.
I'll do my best to back those points up tomorrow.
It's a little weird that you called out Gusev, above; on this topic Gusev, though a geneticist himself, seems more like a popularizer of current research than someone going out on a limb with his own. But check his references: the scientists whose studies he cites seem to be saying the same thing he is.
I was waiting for the reply, but I realized that you might not be able to send one or edit your comment anymore, so here is one from me to give you opportunity to do so. I’m really curious what you found about GWASes or the state of debate around them 10 years ago.
I'll do my best to back those points up tomorrow.
It's a little weird that you called out Gusev, above; on this topic Gusev, though a geneticist himself, seems more like a popularizer of current research than someone going out on a limb with his own. But check his references: the scientists whose studies he cites seem to be saying the same thing he is.