Although Amber is 15 she has not begun to develop breasts an…

Although Amber is 15 she has not begun to develop breasts and does not menstruate. Amber has normal female genitals and is short for her age. Sam has unusually small testicles and gynecomastia. Medical tests reveal he has low levels of testosterone and an extra X chromosome.  Amber probably has ______________; whereas Sam probably has ______________.