Answer:
Turner's Syndrome:
 -random error causes individual to have one X chromosome (the other could be mutated) 
-female genitalia (external) 
-ovaries do not function; no menstruation 
-wide nipples, supes short, wide neck, scoliosis 
-diagnosis at birth/ early childhood from heart problems or growth problems 
-estrogen at 12, 
-bad at math, memory, fingers