Erm  so quite apart from fro from that, this approach to the whole question concentrating on parental investment and female choice would not only make us sensitive to  to female choice in the sense of either submitting to a male or not  but secondly it would make us er wonder what happened even after a female had mated and we could predict couldn't we that females ought to be discriminating abou about the subsequent fate of any fertilized erm  zygote and indeed there's plenty of evidence to show that human females  highly discriminated and far from passive even after they've been fertilized.