Genetic Complementation TestMutationGenes, BacterialMolecular Sequence DataEscherichia coliCloning, MolecularPhenotypeChromosome MappingPlasmidsAmino Acid SequenceGenesAllelesBase SequenceBacterial ProteinsMutagenesis, InsertionalCrosses, GeneticOperonRestriction MappingDNA Transposable ElementsSaccharomyces cerevisiaeDNA, BacterialGenes, RegulatorGenes, LethalRecombination, GeneticTemperatureArabidopsisColiphagesSuppression, GeneticGenes, PlantTransduction, GeneticDrosophila melanogaster