In reply to Macplus.

The nucleus accumbens (in the brain) determines gender identity and develops when a baby is in the womb. We all start out female in the womb. A foetus that develops into a male body, may have a nucleus accumbens telling it that it's a girl. So the baby will be born with a male body, but a brain telling it that it's a girl and visa versa. That creates a transgender person. So stop pretending you know science when you know JACK ISH.