males as modified females

An almost non-sexist article from The (infamous) Economis on gender differences, including debunking reported behavioural differences between the sexes:

In the past, it was assumed that a female was simply a male with hormones, says Tracey Shors, a professor of neuroscience at Rutgers University. The truth is the exact opposite. Female is the default brain setting. Until the eighth week of gestation every human fetal brain looks female. The brain, like the rest of the human body, becomes male as a result of surges of testosterone—one during gestation and one shortly after birth.