TOPICS: Genetic sex, XX, XY, gonads, testes, ovaries, SRY gene, Y chromosome, internal genitalia, external genitalia, hormones, nephrogenic cord, pronephros, mesonephros, metanephros, primordial germ cells, yolk sac, cloaca, gonadal ridge, testis-determining-factor, estradiol, sertoli cells, testosterone, Leydig cells, Mullerian inhibitory factor (MIF), 5 alpha-reductase, dihydrotestosterone (DHT), Mesonephric (Wolffian) duct, paramesonephric (Mullerian) duct, appendix testis, Gartner’s duct, male and female sexual differentiation, undifferentiated gonadal development, gonadal descent, gubernaculum, seminal vesicle, epididymis, ejaculatory duct, ductus deferencs, penis, scrotum, prostate, fallopian tubes, uterus, clitoris, labia, vagina, round ligament, ovarian ligament, processus vaginalis, inguinal canal, urogenital sinus, urogenital fold, labioscrotal swelling, genital tubercle, external genitalia differentiation, estrogen