You say that there are clear biological reasons underlying the differences between males and females. Hmmm.

What if we find an exception to the rule? What if there is one person out there (male for example) who responds to women as a woman does rather than as man does. What does this mean? Is this person biologically wired incorrectly? Therefore, should we considered him deformed as we would a two-headed, three legged man? Or does he carry some dreadful disease because of this retardation or deformity - and is he dangerous? Should we shoot him in the head and put him out of his misery or so he won't corrupt the other men in the world?

Or should we consider that this man didn't respond to environmental influences in the same way as the stereotypical male. If we say that, are we close to saying that men and women are wired identically and the stereotypical differences we see are a result of environmental influences?