Male and female reproductive systems allow human reproduction. Fertilisation occurs when a sperm and egg join to form an embryo. An embryo develops into an unborn baby in the uterus during pregnancy.

The male and female reproductive system The male reproductive system ... half the normal number of chromosomes. An acrosome (part of the tip of the head) that releases enzymes to digest the ...

The prostate gland is part of the male reproductive system. The video below explains what prostate cancer is. It lasts for nearly 2 and a half minutes. The prostate is a gland at the base of the ...

typically happens during sexual reproduction. harem: A group of females associated with a single male. Typically the male in the harem defends his group of females. lek: A mating system which ...