I sometimes get asked if there's a physical difference between a fertilised and unfertilised chicken egg so I cracked a few of my own and compared them to unfertilised commercial eggs. It seems to ...

The 'potential human being' argument gives the right to life to the unborn from the very earliest stage of development - the moment when the egg is fertilised. This argument renders irrelevant any ...

Medical abortion works in two stages: First the women is given the drug mifepristone, which blocks a hormone needed to make fertilised eggs stick to the womb lining. After 48 hours, the woman is ...

Globally, mothers are having fewer children. Yet despite this latest observed decline in birth rates, the number of twins and triplets being born today is higher than ever before.

Chinese scientists achieve genetic breakthrough by breeding baby mice using DNA from two male parents, opening new possibilities in reproductive science and gene editing technology.

Twins occur when two separate eggs are fertilised at the same time, or when a fertilised eggs splits into two. Multiple births can also happen as a result of 'hyper-ovulation' – when more than ...