What does oestregen hormones do?

Estrogen is the main hormone, produced by ovary in female and is responsible for secondary sex characters of females and also for there behavior as a female, but minor amount of testosterone (Male hormone ) produced by Adrenal gland is also essential for it's integrity. Vise verse Testosterone, produced by male testes are essential for the secondary sex characters of males and small amount of estrogen produced by Adrenal gland is essential for it's integrity.