Andrew has fragile-X syndrome and suffers from cognitive ...

[brutforce]

Andrew has fragile-X syndrome and suffers from cognitive deficits. His parents have learned that
 
  Andrew experiences the most common form of inherited mental retardation.
  Andrew experiences a very rare form of mental retardation.
  Andrew possesses excellent social skills.
  Andrew is a very outgoing and friendly individual.

Question 2

The chief chromosomal feature of fragile-X syndrome is that:
 
  a single gene has more than 200 repetitions of one triplet.
  the X chromosome carries dangerous recessive genes.
  the X chromosome carries dangerous dominant genes.
  the X chromosome is missing.

[AISCAMPING]

Answer to Question 1

Andrew experiences the most common form of inherited mental retardation.

Answer to Question 2

a single gene has more than 200 repetitions of one triplet.

[brutforce]

Thanks for the timely response, appreciate it

[helenmarkerine]

Great answer, keep it coming