Which of the following is an example of an epigenetic change in eukaryotes?
A) A loss of an AT base pair from a gene
B) The addition of methyl groups to cytosines in the promoter region of a gene
C) The substitution of an AT base pair by a GC base pair in a gene as a result of a mistake during DNA replication
D) A deletion that simultaneously removes two genes from the genome
E) None of the above represents epigenetic changes.
Correct Answer:
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