Created at 1:30 a.m. May, 05, 2026
Author: enirenberg
Co-authors: zarathustra
Related Note: 1467682233616 1
Rationale for change

DNA methylation is established in gametes before fertilization.

Multiple other mechanisms of imprinting occur in development as well, such as modifications to histones, use of noncoding RNAs, etc. As written, the question implies both that methylation occurs during embryogenesis and that it is the sole means of imprinting.

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