The covalent transfer of a methyl group to either N-6 of adenine or C-5 or N-4 of cytosine. [ GOC:ems https://www.worldcat.org/search?q=bn%3A0198506732 ]
Term information
http://purl.obolibrary.org/obo/NCBITaxon_4932
http://purl.obolibrary.org/obo/NCBITaxon_4896
http://purl.obolibrary.org/obo/NCBITaxon_4930
http://purl.obolibrary.org/obo/NCBITaxon_4895