Why Are There Lesbian Girls?

Why Are There Lesbian Girls?

Why Are There Lesbian Girls?

Heterosexual girls are much more likely to get themselves knocked up than lesbian women. Thus, in terms of evolution, they would seem to have a better opportunity of passing on their genes, while at the same time it would seem that the genes that make girls lesbians would fast vanish from the gene pool.

This causes the question, why are there lesbian women?

Female homosexuality is indeed at least 25% genetic, as determined by a 2011 research of twins held in the United Kingdom. The research discovered that identical twin sisters (who have 100% of their DNA similar) are more likely to both be lesbians than are fraternal twin sisters (who have only 50% similar), proving that, all other environmental factors being equal, genes matter. While the researchers have a theory for how male gayness propagates from one generation to another, nobody has yet provided a viable explanation for how the genes that provide female homosexuality might do the same.

Women’s sexual orientation also appears to be partially impacted by her level of exposure to the male sex hormone androgen when she is in the womb. Larger hormone exposure correlates with more sex nonconformity early in her life (as a kid, she may be called a tomboy), as well as a same-gender orientation later on. A research by Dutch psychologists published in the March issue of the Journal of Sexual Medicine found out that 10% to 12% of female and male kids who feel discomfort with their gender go on to identify as lesbian or gay as adults. Meanwhile, just 1% to 2% of kids who are comfortable with their gender identity turn out to be lesbian or gay.

Adding to the confusion about what leads to female homosexuality is the slipperiness of female sexuality itself. Unlike guys, who are usually sexually oriented solely toward guys or girls, and whose sexuality is essentially fixed from puberty on, a ten-year study by the University of Utah psychologist named Lisa Diamond and her colleagues shows that girls have greater ‘erotic plasticity.’ Their sexual orientation can be influenced by culture, changed by negative or positive experiences and intensified by feelings of attachment and love. Girls are far more likely than guys to ‘report remarkably late and abrupt onset of same-gender sexuality, frequently after straight marriage,’ Diamond reported in January in the Archives of Sexual Behavior.

Their sexual fluidity may emerge from the fact that, girls are sexually aroused by pictures of both guys and girls, across the board, while guys are usually only aroused by participants of their preferred gender. Therefore, the question ‘why are there lesbian girls?’ may be better pronounced as ‘why is women’s sexuality so fluid?’ Lots of girls exist at both extremes of the heterosexual-homosexual spectrum, but it is the formation of this slippery spectrum itself that most requires explaining. It is a task for evolutionary biologists to determine yet what survival or reproductive advantage girls’ ‘erotic plasticity’ confers.

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