10 Facts About Transgender You Should Know

3. Genetics

Genetics is another likely cause of transgender identities. One study shows an association between identifying as transgender and the androgen receptor allele. This allele is a variant associated with feminization or under-masculinization in men. In transgendered men who identified as female, this gene variant had longer repeat length than in men who identified as male, indicating that androgen receptors are partially responsible for gender male identity.