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Originally Posted by staringelf
Well then how do you explain it, sis? It just happens, just like that?
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People can be born with a characteristic without it being caused by genes, it can be caused by the hormonal balance in the womb of the mother for example, hormones in the womb play a big role.
It's possible to imagine that sexual orientation is caused by the various levels of different hormones the fetus receives in the womb, which causes the brain to develop in a certain way and defines the sexual orientation.