Which of the following are true of DNA methylation during reproduction?
A) The sperm and egg DNA maintain their methylation patterns throughout gametogenesis
B) The sperm and egg DNA maintain their methylation patterns in the embryo
C) Methylation patterns in both the egg and sperm DNA are erased at fertilization and re-established in a single wave
D) Only the sperm DNA loses its methylation pattern after fertilization
E) A series of methylation and demethylation events occurs during gametogenesis, fertilization, and implantation in both gametes
Correct Answer:
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