Phenylketonuria is a(n) ____ that can cause intellectual disability if untreated.

Phenylketonuria is a(n) ____ that can cause intellectual disability if untreated.
 
  a. chromosomal abnormality
  b. environmental toxin
 c. inborn error of metabolism
  d. infection

Question 2

Both Prader-Willi and Angelman syndromes are ____.
 
  a. inherited conditions
 b. associated with an involuntary urge to eat
 c. believed to be spontaneous genetic birth defects that occur around the time of conception
  d. none of these

Question 3

Which cause of intellectual disability is associated with an involuntary urge to eat?
 
  a. Down syndrome
 b. Fragile-X syndrome
 c. Prader-Willi syndrome
  d. Angelman syndrome

Question 4

Lindsay and her sister were born into a socially disadvantaged family. Lindsay was adopted into a more privileged home. Lindsay's IQ score is likely to be:
 
  a. higher then her sister's score
 b. the same as her sister's score
 c. lower then her sister's score
 d. one standard deviation lower than her sister's score

Question 5

____ is the most common cause of inherited intellectual disability.
 
  a. Down syndrome
 b. Fragile-X syndrome
 c. Prader-Willi syndrome
  d. Phenylketonuria