Which one of the following statements about the methylation state of CpG islands is INCORRECT?
A) Cells can heavily methylate CpG islands of viral DNA sequences in order to restrict their expression.
B) Cells can heavily methylate CpG islands of genes in transposable elements in order to restrict their expression.
C) The methylation state of CpG islands provides a way to turn genes on or off.
D) The methylation state of CpG islands is static and will not change over time.
E) The methylation state of CpG islands can change in response to the environment.
Correct Answer:
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