We don’t need the causal variants for embryo selection, just the predictive variants. We have this for height now. The only reason we don’t have this for IQ now is everyone doing GWAS studies are too chicken to put an IQ test in with their other measures. As the cost of a sequence declines, this will not last.
Obviously, this is not an issue if there is state involvement.
Obviously, this is not an issue if there is state involvement.