<prompt> True about DNA methylationAlters gene expressionGenetic code remains intactRole in CarcinogenesisProtective mechanism against cleavage by restriction endonuclease  <response>: DNA methylation is an epigenetic mechanism used by cells to control gene expression. A number of mechanisms exist to control gene expression in eukaryotes, but DNA methylation is a commonly used epigenetic signaling tool that can fix genes in the off position.Methylation epigenetically modifies the function of the DNA. When located in a gene promoter, DNA methylation typically acts to repress gene transcription. 