title: Chromosome transfer and Hfr formation by F in rec+ and recA strains of Escherichia coli K12.
mesh_terms: D002876:Chromosomes, Bacterial / Q000502:physiology*; D004274:DNA, Recombinant / Q000378:metabolism; D004926:Escherichia coli / Q000235:genetics*; D005838:Genotype; D009154:Mutation; D011995:Recombination, Genetic
chemical_list: D004274:DNA, Recombinant