F FactorSexConjugation, GeneticExtrachromosomal InheritanceAcridinesEscherichia coliGenetics, MicrobialColiphagesChromosomes, BacterialLactoseDNA, BacterialSex FactorsR FactorsSex CharacteristicsRecombination, GeneticMutationGenesLysogenyCrosses, GeneticLactococcus lactisDrug Resistance, MicrobialPlasmidsDNA, CircularCulture MediaTransduction, GeneticChromosome MappingDNA Restriction EnzymesBacterial ProteinsOperonChromosomesSex ChromosomesSex Determination ProcessesUnsafe SexGenes, BacterialSex WorkersSex DifferentiationSafe SexSex AttractantsSex Determination AnalysisSex DistributionDisorders of Sex DevelopmentPlay and PlaythingsSex PreselectionSex Hormone-Binding GlobulinSex CounselingGonadal Steroid HormonesProstitutionHomosexuality, MaleSex EducationMolecular Sequence DataSexual BehaviorRisk FactorsAge Factors