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'Transsexuality Gene' Boosts Male Hormones, Medical University of Vienna Research


7/30/2008 6:23:08 AM

NewScientist -- A gene variant has been identified that appears to be associated with female-to-male transsexuality – the feeling some women have that they belong to the opposite sex. While such complex behaviour is likely the result of multiple genes, environmental and cultural factors, the researchers say the discovery suggests that transsexuality does have a genetic component. The variation is in the gene for an enzyme called cytochrome P17, which is involved in the metabolism of sex hormones. Its presence leads to higher than average tissue concentrations of male and female sex hormones, which may in turn influence early brain development.

Read at New Scientist

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