title: Evolution of the three overlapping gene systems in G4 and phi X174.
mesh_terms: D010584:Bacteriophage phi X 174 / Q000235:genetics*; D001483:Base Sequence; D005075:Biological Evolution; D002874:Chromosome Mapping; D004247:DNA / Q000235:genetics; D005796:Genes; D009711:Nucleotides / Q000235:genetics*
chemical_list: D009711:Nucleotides; D004247:DNA