One of the fundamental rules of inheritance states that different alleles (gene copies) of a trait, such as sex, are ...

Activists quietly shifting the goalposts on sex-and-gender discussion to escape the fact they're currently losing the biology of sex debate.

Is it possible that Y Chromosomes might actually disappear from genetic code? What would happen to species as we know them? We're generally taught that chromosomes determine an animal's sex, but turns ...

Differences between men and women in intelligence and behaviour have been proposed and disputed for decades. Now, a growing ...

A Brazilian woman is discovered to be a human 'chimera'. She carries her twin brother's DNA in her blood cells, making her ...

Roshaante Anderson found out he was intersex when he was 11 years old and began living as a boy a couple of years later.

Scientists still don’t fully understand why women live longer than men. The aging process differs between the sexes, and in ...

A study of 436 adults with severe mental illness found that drinking three to four cups of coffee a day was associated with ...

Drinking a maximum of 3–4 cups of coffee a day may slow the "biological" aging of people with severe mental illness, by ...

Understanding the roots of biological differences between men and women could help researchers better understand ageing ...