Genetic Complementation TestMutationGenes, BacterialMolecular Sequence DataPhenotypeEscherichia coliChromosome MappingCloning, MolecularGenetics, MedicalPlasmidsAllelesAmino Acid SequenceGenetic CounselingBase SequenceGenesCrosses, GeneticBacterial ProteinsGeneticsMutagenesis, InsertionalEugenicsGenetic ServicesOperonRestriction MappingDNA Transposable ElementsSaccharomyces cerevisiaeDNA, BacterialGenes, RegulatorGenes, LethalRecombination, GeneticTemperatureArabidopsisColiphagesObstetric NursingGenetic TestingSuppression, GeneticConcentration CampsGenetic Diseases, InbornGenes, PlantTransduction, GeneticDrosophila melanogaster