MeiosisSpindle ApparatusOocytesMuscle SpindlesChromosome SegregationNondisjunction, GeneticKinetochoresMitosisMetaphaseAnaphaseMicrotubulesProphaseSpermatocytesCell Cycle ProteinsCentromereMeiotic Prophase IChromatidsChromosomesChromosome PairingMad2 ProteinsSpores, FungalSynaptonemal ComplexChromosomes, FungalSchizosaccharomyces pombe ProteinsKinesinCentrosomeCrossing Over, GeneticSchizosaccharomycesPrometaphaseChromosomal Proteins, Non-HistoneSaccharomyces cerevisiae ProteinsSeparaseCyclin BSaccharomyces cerevisiaeAurora KinasesTubulinMicrotubule-Associated ProteinsPolar BodiesNuclear ProteinsAneuploidyRecombination, GeneticSpermatogenesisPachytene StageProto-Oncogene Proteins c-mosMutationOogenesisM Phase Cell Cycle CheckpointsCdc20 ProteinsNocodazoleAnaphase-Promoting Complex-CyclosomeProtein-Serine-Threonine KinasesFungal ProteinsSecurinMaturation-Promoting FactorMicrotubule-Organizing CenterUbiquitin-Protein Ligase ComplexesStarfishTelophaseDiploidyMicrotubule ProteinsXenopus ProteinsSaccharomycetalesHaploidyCDC2 Protein KinaseCell NucleusCell CycleCaenorhabditis elegansAurora Kinase CSister Chromatid ExchangeCyclin B1Nuclear Matrix-Associated ProteinsMolecular Sequence DataOvumDrosophila ProteinsDyneinsCaenorhabditis elegans ProteinsCytokinesisChromosomes, MammalianMicroscopy, FluorescenceSex ChromosomesTestisGerm Cells