title: Two insertions in the galactose operon having different sizes but homologous DNA sequences.
mesh_terms: D002876:Chromosomes, Bacterial; D003090:Coliphages; D004269:DNA, Bacterial; D004926:Escherichia coli; D005690:Galactose / Q000378:metabolism; D066298:In Vitro Techniques; D008967:Molecular Biology; D009876:Operon; D012333:RNA, Messenger
chemical_list: D004269:DNA, Bacterial; D012333:RNA, Messenger; D005690:Galactose