"g is 85% heritable" does not actually mean, imply, or even give strong evidence for the likelihood that "racially-linked genes cause the racially-correlated outcome differences in IQ tests." A trait that's 85% heritable is actually a complicated mix of many different biological factors, whose various causal powers (abilities to cause a specific outcome if interfered-with) we simply don't know, except that 15% of them don't seem to pass from parent to child in twin-studies (and I would certainly hope that separated-twin studies were actually done at all, because that's Genetic Causality 101 stuff).
Thus, if someone wants to claim that "black people have lower IQs because they are black", they need to dissolve the concept of race entirely and not only find much broader evidence than studies on African Americans who are, after all, something like half "white", but in fact just cut to the fucking chase and locate the relevant genes.
But of course, if you located the genes and alleles that make some ethnic groups smarter or stupider, you could invent a gene therapy that would make everyone as smart as the smartest ethnic groups, or at least understand what sort of trade-offs are involved in genetic treatments of that sort (ie: Africans often carry a gene that helps them resist malaria but can cause sickle-cell anemia if you get two copies of the recessive allele). If you located the genes and alleles, then within 10 +/- 5 years (depending on how quickly your treatment gets funded) we could eliminate all genetically-caused racial gaps in intelligence.
This, of course, would greatly displease the racists, who don't actually want people to get smarter; they want to justify a peculiar social hierarchy. This is why you always see certain people waving their hands at "racial IQ gaps" and "heritability" but not funding research into intelligence-enhancing gene therapies.
Thus, if someone wants to claim that "black people have lower IQs because they are black", they need to dissolve the concept of race entirely and not only find much broader evidence than studies on African Americans who are, after all, something like half "white", but in fact just cut to the fucking chase and locate the relevant genes.
But of course, if you located the genes and alleles that make some ethnic groups smarter or stupider, you could invent a gene therapy that would make everyone as smart as the smartest ethnic groups, or at least understand what sort of trade-offs are involved in genetic treatments of that sort (ie: Africans often carry a gene that helps them resist malaria but can cause sickle-cell anemia if you get two copies of the recessive allele). If you located the genes and alleles, then within 10 +/- 5 years (depending on how quickly your treatment gets funded) we could eliminate all genetically-caused racial gaps in intelligence.
This, of course, would greatly displease the racists, who don't actually want people to get smarter; they want to justify a peculiar social hierarchy. This is why you always see certain people waving their hands at "racial IQ gaps" and "heritability" but not funding research into intelligence-enhancing gene therapies.