Cell Cycle ProteinsCheckpoint Kinase 2DNA DamageCell CycleGenes, cdcProtein-Serine-Threonine KinasesMitosisG2 PhaseCell Cycle CheckpointsDNA RepairProtein KinasesAtaxia Telangiectasia Mutated ProteinsMad2 ProteinsSpindle ApparatusM Phase Cell Cycle CheckpointsSaccharomyces cerevisiae ProteinsS PhaseDNA-Binding ProteinsSchizosaccharomyces pombe ProteinsNuclear ProteinsSchizosaccharomycesRad52 DNA Repair and Recombination ProteinSaccharomyces cerevisiaeDNA ReplicationHydroxyureaFungal ProteinsG2 Phase Cell Cycle CheckpointsKinetochoresMutationG1 PhaseGamma RaysPhosphorylationDNA, FungalTumor Suppressor Protein p53DNA Repair EnzymesDNA Breaks, Double-StrandedTumor Suppressor ProteinsIntracellular Signaling Peptides and ProteinsUltraviolet RaysNocodazoleChromosomal InstabilityRad51 RecombinaseRadiation, IonizingCdc20 ProteinsGenes, FungalCyclin BCDC2 Protein KinaseGenomic Instabilitycdc25 PhosphatasesMolecular Sequence DataRecombination, GeneticAtaxia TelangiectasiaHeLa CellsCyclin-Dependent Kinase Inhibitor p21S Phase Cell Cycle CheckpointsChromosome SegregationCyclinsProtein BindingMetaphaseRadiation ToleranceCell DivisionMethyl MethanesulfonateCyclin B1Calcium-Binding ProteinsApoptosisRepressor ProteinsSignal TransductionDNA HelicasesCell LineCell Line, TumorAmino Acid SequenceG1 Phase Cell Cycle CheckpointsDNAAneuploidyGene DeletionModels, BiologicalHistonesBRCA1 ProteinMeiosisExonucleasesUbiquitin-Protein Ligase ComplexesAnaphaseAnaphase-Promoting Complex-CyclosomeBase SequenceEndonucleasesChromosomes, FungalFibroblastsChromosomal Proteins, Non-HistoneRecombinational DNA RepairReplication Protein ACell NucleusRNA, Small InterferingFlow CytometryCarrier ProteinsEndodeoxyribonucleasesMicrotubulesPhenotypeRetinoblastoma ProteinPrometaphaseCell Survival