Dr. Bernard Zuger found that feminine acting young boys do NOT become transsexual.
(no more proof needed than this)
Dr. Fred Whitam finds the same thing Zuger found
Dr Colette Chiland finds the same thing as Zuker and Whitan found
When samples of such children have been followed longitudinally, one realizes that an extremely small number of them becomes transsexual, becoming for the most part homo- or bi-sexual, though some become heterosexual.