Donald Trump, who has returned to the U.S. presidency, has declared that there are only two genders, male and female, and ...

OPINION What happens when the mem illustrating this article does not work? Lance Lawson on why gender and chromosomes may not align as neatly as many suggest. Christian disputes about the now famous ...

A UCSF study reveals that maternal X chromosome expression may accelerate brain aging and cognitive decline. Female mice with ...

A new study reveals that the maternal X chromosome may accelerate brain ageing and increase Alzheimer's risk. Experiments on ...

Female mammals typically carry two X chromosomes — one from each parent — and a new study suggests that the maternal X is ...

all human foetuses' sex organs are identical at conception in that they have none. Foetuses subsequently develop in the same ...

Sarah McBride has pointed out a fatal flaw in President Donald Trump’s executive orders which targets the trans community.

It's a point that people have been quick to raise online. In the first few weeks after conception, all embryos look the same. We can call that state "unisex", but the basic blueprint is what we ...

Roman writers found the relative empowerment of Celtic women in British society remarkable. People today shouldn’t.

The researchers present a genetic analysis of mitochondrial DNA (mtDNA), which is matrilineally inherited (from the mother), ...

The targeting of telomeres offers promise for new cancer therapies, which can be aimed at disrupting the mechanisms that maintain telomere integrity and length. Some have suggested that cancers are ...

But a new study hints that maybe we aren’t so special. A million years ago, researchers have found, an extinct species of human relatives known as Homo erectus thrived in a harsh desert ...