Australian researchers have identified a significant link between a gene involved in testosterone action and male transsexualism.
DNA analysis from 112 male-to-female transsexual volunteers showed they were more likely to have a longer version of the androgen receptor gene.
The genetic difference may cause weaker testosterone signals, the team reported in Biological Psychiatry.
However, other genes are also likely to play a part, they stressed.
Increasingly, biological factors are being implicated in gender identity. […]
Apparently, we really are a third gender, of sorts. Go read the story. It’s worth it.