A female monozygotic twin pair discordant for transsexualism. Some theoretical implications.
A 13-year-old girl was referred because of sexual identity problems. There was no mental illness or neurological abnormalities. As her twin sister had no sexual identity problems, it appears that transsexualism is not transmitted by a simple genetic mechanism.
Garden
G M
GM
Kidderminster General Hospital, Birmingham.
Rothery
D J
DJ
D000293:Adolescent; D005260:Female; D005783:Gender Identity; D006801:Humans; D010287:Parent-Child Relations; D012931:Social Environment; D014189:Transsexualism / Q000209:etiology / Q000235:genetics*; D014430:Twins, Monozygotic