Still plenty of implications for eugenics.

P(Child_IQ | Mommy_Race,Mommy_IQ, Daddy_Race,Daddy_IQ) may still vary by race, so that there are plenty of implications for eugenics.

Such as this being false:

If the point is to raise the average, the population group doesn't matter.

I'd expect some reversion to the mean of the race, where Mommy_Race = Daddy_Race . Anyone got stats on that distribution?

I'd expect a broadening of the distribution where Mommy_Race <> Daddy_Race, and variability by race combination.