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Lilyofthevalley
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But Vilain’s research suggests there are factors at work that can’t be measured. The scientific dogma used to be that hormones alone could “masculinize” the brain, he said. But he identified 54 genes that work differently in the brains of male and female mouse embryos just 10 days after conception — before sex hormones are ever produced.
Doctors also once thought that how people were raised and their genitalia were enough to determine gender, said Reiner, who as a urologist performed sex-assignment surgeries on babies.
Doctors also once thought that how people were raised and their genitalia were enough to determine gender, said Reiner, who as a urologist performed sex-assignment surgeries on babies.