A lesbian is defined as a female body with a masculinized brain. Rates approximate 1 lesbian for every 8-10 gay males. (Pease, Barbara and Allan. Why Men Don’t Listen and Women Can’t Read Maps. p 171-186. NY:Broadway Books, 1998.
For some lesbians, their hormone balance was probably more like that of males during fetal development (e.g., some lesbian women have unusually high testosterone levels). (Wilson, Glenn. The Great Sex Divide. p 75-76. England: Peter Owen Publishers, 1989.)
Lesbians tend to exhibit attributes associated with exposure to higher testosterone levels while in the womb. (Pease, Barbara and Allan. Why Men Don’t Listen and Women Can’t Read Maps. p 165-168. NY:Broadway Books, 1998.)