Sex cells: egg and sperm

Are men from Mars and women from Venus? No, it’s much stranger than that…

What the scientists are saying… Turning skin ...

They might not be especially striking to look at–if you can see them at all–but seeds are among the natural world’s most awe-inspiring marvels, says John Lewis-Stempel

Sex is a Spectrum: The Biological Limits of ...

Dr Elise Dallas is a GP whose expertise you can trust

Rather than every child having a truly random 50/50 chance of being a boy or a girl, maternal age and genetics could be ‘weighting the coin toss’ during conception, a new study has found. Specifically