The length of a person's finger can indicate their sexuality, according to a new study.
Researchers at Essex University found that women whose ring fingers are longer than their index fingers are more likely to be lesbians.
The study looked at identical twins where one sibling was heterosexual and found that the homosexual twin tended to have a greater difference between the length of their index and their ring finger, with the difference being most obvious among women.
The study found that in female twins, the homosexual twin had more so-called male-typical hands than her straight sister.
Dr Tuesday Watts, from the department of psychology, said: ''Because identical twins, who share 100 percent of their genes, can differ in their sexual orientations, factors other than genetics must account for the differences.''