Which of the following is NOT a characteristic of imprinted loci?
A) Some imprinted alleles have biased expression, rather than being all on or off.
B) Imprinting occurs in clusters of 3 to 12 genes.
C) Imprinted loci contain protein-coding and noncoding RNA genes.
D) Imprinted loci occur on sex chromosomes but not on autosomes.
E) Some alleles are imprinted only in certain tissues or at certain times of
development.
