The Distinctness of Race

There is genetic variation and so we know that some individuals are going to be better at certain things than others. The question is do they actually form homogeneous enough groups that we can reasonably label them races? I don't think there's much doubt that that is the case, you have to be a really extreme post modernist or you know deconstruction is to deny that. But then not saying the evidence you just that I'm just right right but but the discreetness or lack thereof.