MeiosisCell DivisionSpermatocytesProphaseChromosome SegregationOocytesMeiotic Prophase ISpores, FungalSpermatogenesisMetaphasePolar BodiesNondisjunction, GeneticChromosomesSpindle ApparatusChromatidsCell Cycle ProteinsMitosisSynaptonemal ComplexChromosome PairingSpermatidsProto-Oncogene Proteins c-mosAneuploidyCentromereCrossing Over, GeneticCyclin A1Pachytene StageMutationSpermatozoaAnaphaseCyclin BAurora Kinase CKinetochoresCytokinesisParthenogenesisZygoteSchizosaccharomycesHaploidyChromosomal Proteins, Non-HistoneSaccharomyces cerevisiaeSchizosaccharomyces pombe ProteinsDiploidyTestisSeparaseTelophaseAsymmetric Cell DivisionChromosomes, FungalMaturation-Promoting FactorRecombination, GeneticAnaphase-Promoting Complex-CyclosomeOvumUbiquitin-Protein Ligase ComplexesCell NucleusOogenesisSaccharomyces cerevisiae ProteinsMolecular Sequence DataStarfishCell Nucleus DivisionCentrosomeNuclear ProteinsDrosophila ProteinsMicrotubulesCdc20 ProteinsSex ChromosomesSister Chromatid ExchangeGametogenesisSeminiferous TubulesCell CycleSpermatogoniaDrosophilaCaenorhabditis elegansFertilizationAmino Acid SequenceCaenorhabditis elegans ProteinsSporesFungal ProteinsGerm CellsPhenotypeCDC2 Protein KinaseMicroinjectionsSecurinCyclin B1Models, BiologicalProtein-Serine-Threonine KinasesAurora KinasesMicroscopy, FluorescenceMicroscopy, ElectronGenes, FungalChromosomes, MammalianDrosophila melanogasterSeminiferous EpitheliumTubulinCrosses, GeneticPloidiesInfertility, MaleBase SequenceSertoli CellsDNA-Binding ProteinsFertilityGene Expression Regulation, DevelopmentalChromatin