An organic methyl molecule attached to part of a DNA strand has been identified as a(n)

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An organic methyl molecule attached to part of a DNA strand is called an epigenetic mark. Epigenetic modifications are changes to a DNA molecule that do not alter the sequence of nucleotides but can still affect gene expression. Methylation is one of the most common types of epigenetic modifications and involves the addition of a methyl group to a cytosine nucleotide. This modification can affect gene expression by blocking transcription factor binding or recruiting proteins that repress gene expression.

An Organic Methyl Molecule Attached to Part of a DNA