
Homosexuality: Gay Gene Ruled Out, Environment Blamed
Genes play just a small role in whether a person is gay, scientists have found, after discovering that environment has a far bigger impact on homosexuality.
In the biggest ever study into the genetic basis of sexuality, researchers from more than 30 institutions including Cambridge University and Harvard, looked at the DNA of nearly 500,000 people in Britain and the US.
They found that genes are responsible for between eight to 25 per cent of the probability of a person being gay, meaning at least three quarters is down to environment.…