SpermatogenesisOogenesisTestisSpermatocytesSpermatidsSeminiferous TubulesSertoli CellsSpermatogoniaSpermatozoaInfertility, MaleGerm CellsSeminiferous EpitheliumOocytesSperm CountDrosophila ProteinsMeiosisFertilityOvaryDrosophilaOligospermiaDrosophila melanogasterAzoospermiaBlood-Testis BarrierGene Expression Regulation, DevelopmentalVitellogenesisTestosteroneGenes, InsectContraceptive Agents, MaleLeydig CellsOvumPachytene StageMeiotic Prophase IInsect ProteinsEgg ProteinsMolecular Sequence DataEpididymisRNA-Binding ProteinsCryptorchidismRNA, MessengerSpermatogenesis-Blocking AgentsOrgan SizeSperm MotilityIn Situ HybridizationMutationOvarian FollicleAmino Acid SequenceGametogenesisDisorders of Sex DevelopmentBase SequenceAnimals, Genetically ModifiedFollicle Stimulating HormoneSexual MaturationAntispermatogenic AgentsEmbryo, NonmammalianChromosomes, Human, YTesticular DiseasesFertilizationProtaminesSperm TailPhenotypeImmunohistochemistryCaenorhabditis elegansSperm MaturationEgg ShellY ChromosomeSertoli Cell-Only SyndromeSperm HeadReproductionVaricoceleSex Determination AnalysisGene ExpressionInsect HormonesTransforming Growth Factor alphaNuclear ProteinsCaenorhabditis elegans ProteinsAcrosomeCell DifferentiationTranscription FactorsGonadsReverse Transcriptase Polymerase Chain ReactionMice, KnockoutGonadotropinsSequence Homology, Amino AcidSeminal VesiclesX ChromosomeSex Determination ProcessesCloning, MolecularCell NucleusRNA, Messenger, StoredZygoteTransforming Growth FactorsCytoplasmXenopus laevisDEAD-box RNA HelicasesGene Expression RegulationEmbryonic DevelopmentLuteinizing HormoneInhibinsDNA, ComplementarySex Chromosomes