Genes in listings etc. often have a number of the type NC_000012.12 associated with them. How should this be interpreted?
This particular ID represent RefSeq accession number. NC_ stands for a genomic molecule representing complete genomic molecule, usually reference assembly. Every sequence has a stable accession number, a version number, and an integer identifier (gi) assigned to it. RefSeq records can be distinguished from INSDC records by the inclusion of an underscore (“_”) at the third position of the accession number.