Could two men have children one day? Chinese scientists have bred mice without mothers. Some think this has huge implications for our emotional, social and psychological lives.
Lab creates mouse with two fathers

Glossary
Bi-paternal - Having two genetic fathers.
Embryo - A fertilised egg that is developing into a foetus.
DNA - Deoxyribonucleic acid is the material in an organism that carries genetic information.
Reproduction - The process of having offspring, or babies.
Inheritance - The rules that determine how characteristics, like eye colour, are passed from parents to children. Or physical items or money that is left to you by someone who has died.
Prejudice - An idea about something, especially a group of people, that is not based on reality.