SpermatocytesMeiotic Prophase IProphaseMeiosisSynaptonemal ComplexChromosome PairingSpermatogenesisPachytene StageTestisSpermatidsSpermatogoniaChromosomesSertoli CellsSpermatozoaSeminiferous TubulesCrossing Over, GeneticGerm CellsSex ChromatinOocytesCentromereSex ChromosomesMetaphaseOogenesisCell Cycle ProteinsMitosisY ChromosomeChromosome SegregationChromosomes, FungalCell NucleusNuclear ProteinsSeminiferous EpitheliumRad51 RecombinaseRecombination, GeneticOvaryInfertility, MaleTelomereCaenorhabditis elegansChromosomal Proteins, Non-HistoneIn Situ Hybridization, FluorescenceX ChromosomeDisorders of Sex DevelopmentCaenorhabditis elegans ProteinsNuclear EnvelopeFertility Agents, MaleHistonesCoprinusSpindle ApparatusSchizosaccharomycesMutationMolecular Sequence DataDNA Breaks, Double-StrandedEndodeoxyribonucleasesSpores, FungalSaccharomycetalesChromatidsGametogenesisEsterasesNuclear Receptor Subfamily 6, Group A, Member 1MicrotubulesChromatinTelophaseDNA-Binding ProteinsCell NucleolusBlood-Testis BarrierSecale cerealeAmino Acid SequenceSchizosaccharomyces pombe ProteinsMicroscopy, ElectronMicroscopy, FluorescenceSaccharomyces cerevisiae ProteinsImmunohistochemistryAnaphaseBase SequenceGene Expression Regulation, DevelopmentalRNA, MessengerSperm CountDyneinsFluorescent Antibody TechniqueMice, KnockoutProtein-Serine-Threonine KinasesSaccharomyces cerevisiaeDNA RepairGenes, HelminthDiploidyDipteraInfertilityChromosomes, PlantFungal ProteinsLeydig CellsFertilityOvumCell CycleMice, Inbred C57BLZea maysTime FactorsMarsupialiaCyclin A1DNASequence Homology, Amino AcidCentrosome