According to Dr Cordelia Fine, author of Delusions of Gender: How Our Minds, Society and Neurosexism Create Difference, there is no convincing evidence that our brains are hardwired according to gender, and no such thing as "biological destiny".
Full article: The Guardian
She also points out that, because of the brain's plasticity in responding to the world around it, differences in male and female brains can't just be chalked up to congenital biological differences. "The circuits of your brain are a product of your physical, social and cultural environment, your behaviour and your thoughts," she says. "Gender as a social phenomenon is part of our neural circuitry."