Sexual differentiation in humans development can only occur when the fetal testis secretes key hormones at a critical period in early gestation. The testes begin to secrete three hormones that influence the male internal and external genitalia: they secrete anti-müllerian hormone (AMH), testosterone, and dihydrotestosterone (DHT). Anti-müllerian hormone causes the paramesonephric ducts to regress. Testosterone converts the mesonephric ducts into male accessory structures, including the epididymis, vas deferens, and seminal vesicle. Testosterone will also control the descending of the testes from the abdomen into the scrotum. Many other genes found on other autosomes, including"WT-1", "SOX9", "SF-1" also play a role in gonadal development. Females:
Causes of sexual violence that a correct knowledge of the causes of rape is necessary in order to develop effective preventive measures. There is extensive research on sexual coercion. Causes of sexual violence Causes of sexual violence are debated and explanations of the cause include military conquest, socioeconomics, anger, power, sadism, sexual pleasure, psychopathy, ethical standards, laws, attitudes toward the victims and evolutionary pressures. Clinical psychologist Nicholas Groth has described several different types of rape. A detailed conceptual analysis shows that objectification might underlie denial of agency and personhood that leads to rape. The goal of this rapist is to humiliate, debase and hurt