Aspects of Steroidal Influence on Fetal Development

摘要: Sexual differentiation, like all other fetal differentiation processes, proceeds in several consecutive steps (Fig. 1). The first step, the determination of genetic sex, is completed at moment fertilization. establishment gonadal sex next step. Which factors cause gonad to develop into either a testis or an ovary still much debated question awaiting final clarification. In male fetuses, further sexual development takes place thenceforth under endocrine control testis. female only absence activity consistent with normal differentiation.