DNA methylation is the covalent addition of methyl groups to DNA bases, typically the cytosine of CpG dinucleotides. It is catalyzed by methyltransferase enzymes using a S-adenosyl methionine donor ...

DNA replication is the biological process by which an exact copy of a deoxyribonucleic acid (DNA) molecule is created and it is the basis for biological inheritance. Each of the two strands of the DNA ...

DNA methylation involves adding a methyl group to DNA, which may influence gene expression and affect health aspects like childhood development and aging. Lifestyle factors, especially diet, may ...