Fridae

The brain chemical serotonin may play a surprising role in sexual preference, according to a new study, which showed that male mice lacking serotonin did not show any overall preference for either sex when presented with different options for mates.

Scientists in Korea have discovered that female mice can be turned "lesbian" by deleting a single gene at embryo stage.

Offering fresh evidence that sexual orientation is hardwired into our neural circuitry, Swedish researchers say they have found striking similarities between the brains of gay men and straight women and vice versa.

Are gay people unwilling to believe the science surrounding homosexuality, instead preferring simple cut-and-dried answers? Alex Au looks at current scientific consensus which say that multiple genes do play a part and urges scientific literacy.