Sexual identity could be hardwired in genes
A new study published in Molecular Brain Research suggests that sexual identity is hardwired by one's genes.
Using two genetic testing methods, the researchers compared the production of genes in male and female brains in embryonic mice -- long before the animals developed sex organs.
They found 54 genes produced in different amounts in male and female mouse brains, prior to hormonal influence. Eighteen of the genes were produced at higher levels in the male brains; 36 were produced at higher levels in the female brains. [...]
"Our findings may explain why we feel male or female, regardless of our actual anatomy," said Vilain. "These discoveries lend credence to the idea that being transgender --- feeling that one has been born into the body of the wrong sex -- is a state of mind."
At least for mice. Abstract.
