A study has shed new light on the mystery of redheads, with eight genes linked to the hair colour discovered by scientists at Edinburgh University.
It was previously believed the hair colour was controlled by a single gene with versions passed on by both parents, however, not everyone carrying two red-haired versions is a redhead, indicating more genes had to be involved.
The largest genetic study of hair colour to date examined 350,000 people, comparing brown and black haired people with red-haired, identifying eight previously unknown genetic differences associated with ginger locks.