Women whose left index and ring fingers are opposite lengths are some-more expected to be lesbians, a investigate suggests.

Scientists totalled a fingers of 18 pairs of womanlike Matching Twins, where one was true and a other gay.

On average, a lesbians, though not a true twins, had opposite sized index and ring fingers, typically a masculine trait, though usually on a left hand.

This might be a outcome of bearing to some-more testosterone in a womb, a University of Essex researchers said.

The scientists also totalled a fingers of 14 pairs of masculine matching twins, where one was true and a other gay, though found no link.

Both group and women were unprotected to a “male” hormone, testosterone, in a womb – though some might be unprotected some-more than others, a scientists said.

Study author Dr Tuesday Watts, from a psychology dialect during Essex University, said: “Because matching twins, who share 100% of their genes, can differ in their passionate orientations, factors other than genetics contingency comment for a differences.

“Research suggests that a sexuality is dynamic in a womb and is contingent on a volume of masculine hormone we are unprotected to or a approach a particular bodies conflict to that hormone, with those unprotected to aloft levels of testosterone being some-more expected to be bisexual or homosexual.

“Because of a couple between hormone levels and disproportion in finger lengths, looking during someone’s hands could yield a idea to their sexuality.”

The commentary are published in Archives of Sexual Behaviour.