Reproductive organs – there is a difference here between the glands for males and females. Sperm is produced in the testes in males, and eggs in the ovaries in females. Fertilised eggs develop in the uterus in the female (and that’s were we all came from!).
In males, testosterone is produced primarily in the testes. This hormone is known to increase aggression and the tendency to criminal behaviour. There is also a link between high testosterone levels and baldness (genes also play a part).
The female ovaries produce the hormones oestrogen and progesterone, and these hormones are part of the monthly menstrual cycle. The contraceptive pill acts to disrupt the hormone balance and block the release of eggs from the ovaries.