Fertilisation close fertilisationThe joining of a male and female gamete. happens if the egg cell meets and joins with a sperm cell in the oviduct. The fertilised egg attaches to the lining of the ...

The male reproductive system has two testes (singular ... giving insight to the human body and its capabilities. BBC Teach has thousands of free, curriculum-linked resources to help deliver ...

One of the most fascinating aspects of human life is how we choose ... on strategies for maximizing individual reproductive success. Aa Aa Aa A mating system describes how males and females ...

MONTGOMERY, Ala. — The Alabama Senate Thursday approved a bill defining “sex-based terms” strictly based on biological sex.