That isn’t always possible in cases where the genetic programming is messed up. A person with the XY chromosomes who cannot respond to testosterone does not develop as a male, and probably is unaware of being genetically male. The difference in a male and female brain is not caused by the genetics, but by the amount of testosterone present during fetal development. Without testosterone, the brain is female.
Some individuals are the result of the fusion of two early embryos. If those embryos are male and female, then that person is a true hermaphrodite and has both estrogen and testosterone guiding their growth and brain development.
“Some individuals are the result of the fusion of two early embryos.”
Chimeras.
I’m left handed and female. I read somewhere that being left handed is due to an unusual amount of testosterone in the system during gestation. Anyone else hear of that?