Recombination, GeneticChromosomes, BacterialHomologous RecombinationCrossing Over, GeneticRad52 DNA Repair and Recombination ProteinV(D)J RecombinationBase SequenceMeiosisMolecular Sequence DataIntegrasesDNA RepairModels, GeneticRad51 RecombinaseGene ConversionMutationRecombinasesDNA NucleotidyltransferasesChromosome MappingVDJ RecombinasesPlasmidsDNA Breaks, Double-StrandedDNA-Binding ProteinsEvolution, MolecularImmunoglobulin Class SwitchingPhylogenySaccharomyces cerevisiaeRec A RecombinasesGenetic VariationDNA, FungalAllelesAttachment Sites, MicrobiologicalChromosomes, FungalEscherichia coliDNASequence Analysis, DNADNA HelicasesImmunoglobulin Joining RegionChromosome PairingDNA DamageGenetic MarkersCrosses, GeneticGenes, RAG-1ExodeoxyribonucleasesGenetic LinkageGene RearrangementImmunoglobulin Switch RegionChromosomesRepetitive Sequences, Nucleic AcidGene TargetingBacteriophage lambdaDNA ReplicationSequence Homology, Nucleic Acid