In: Biology
It would be more appropriately gender differentiation of the brain. In majority of animals, variable concentration of chemicals in the fetal or brain of infant to sexual hormones create a statistically significant different structure of brain and also functions of brain that directly reciprocate with the sexually mature reproductive behaviour (adult). In case of male brain needs higher levels of male hormones like testosterone in order to properly differentiation in an individual.During the embryonic development (intrauterine phase) fetal brain develops towards male direction regulated by secretion of testosterone on the neurons or towards female direction by non-availability of testosterone hormonal surge. Sexual orientation is determined in to the brain during the embryonic development (when fetus remains in the womb itself). The rest of the things are controlled and differentiated by the brain through expression or inhibition of hormones.