chromosome

Years after the discovery of her uterus, Annalise learned she was born with a mix of both XX and XY chromosomes.

Dr Upton told the tribunal that Ms Peggie had also "asked me what my chromosomes were" and that other staff members were also uncomfortable with the doctor using the female changing room.

An investigation into the death carried out by the trust said the second test showed "all 50 cells studied had a normal chromosome compliment".

By contrast, there was a lot of diversity in the Y chromosomes, which is passed from father to son, indicating that men from lots of different families married into the community.

Using skin samples collected from variously colored cats, the researchers homed in on a mutation on the X chromosome that increases the amount of a protein called Arhgap36 only in pigment-producing cells called melanocytes.