DNA methylation

noun

Definition of DNA methylation

  1. :  the enzymatically controlled methylation of a nucleotide base (such as cytosine in eukaryotes) in a molecule of DNA that plays a role in suppressing gene expression A process called DNA methylation sets down “marks” on bits of DNA and is typically thought to squelch gene expression. — Sarah Baldauf DNA methylation is a mark on genomic DNA made by addition of methyl groups to cytosine bases … — Adrian Bird

First Known Use of dna methylation

1963


Medical Dictionary

DNA methylation

noun

Medical Definition of DNA methylation

  1. :  the enzymatically controlled methylation of a nucleotide base (as cytosine in eukaryotes) in a molecule of DNA that plays a role in suppressing gene expression


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