The most common cause of heterosexual development in a female at the expected age of pubey is-
Heterosexual pubey is characterized by a pattern of development that is typical of the opposite sex occurring at the expected age of normal pubey. The most common cause of heterosexual development at the expected age of pubey is polycystic ovary syndrome The most common cause of precocious pubey is constitutional (idiopathic), but more serious causes must be ruled out and therapy geared toward optimizing adult height...
Congenital Adrenal hyperplasia
Pure gonadal dysgenesis
Polycystic ovarian syndrome
Complete androgen insensitivity syndrome
Polycystic Ovarian Syndrome