The process of DNA methylation is probably the best example of an epigenetic phenomenon currently known.

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DNA methylation is a well-established epigenetic phenomenon that involves the addition of a methyl group to the DNA molecule, which can alter gene expression without changing the DNA sequence itself. This process plays a critical role in regulating gene expression during development, and dysregulation of DNA methylation has been implicated in several diseases, including cancer.

The Process of DNA Methylation Is Probably the Best Example