Which one of the following statements about genomic imprinting is FALSE?

Which one of the following statements about genomic imprinting is FALSE?
  A. The DNA changes involved are reversible.
  B. It is considered an epigenetic change.
  C. It can occur in any gene.
  D. It takes place during gamete formation or early embryonic development.
  E. It affects the expression of a gene, not the gene itself.

Question 2

A mutation occurs that changes a C to a T in DNA such that, in the mRNA transcribed from this piece
  of DNA, a UGG codon is changed to UGA. This mutation is a
  A. substitution mutation.
  B. missense mutation.
  C. nonsense mutation.
  D. substitution mutation and a missense mutation.
  E. substitution mutation and a nonsense mutation.