ReproductionCell DivisionReproduction, AsexualSex CharacteristicsSex FactorsSexBasic Reproduction NumberFertilityAsymmetric Cell DivisionSex ChromosomesCell Nucleus DivisionPregnancyReproductive TechniquesSexual Behavior, AnimalSex Determination ProcessesMitosisBiological EvolutionModels, BiologicalUnsafe SexMutationSex AttractantsSex DifferentiationMeiosisMolecular Sequence DataSeasonsDisorders of Sex DevelopmentLongevityParthenogenesisSex WorkersInfertilityTime FactorsOvaryCell CycleSpermatozoaSex Determination AnalysisGonadsFertilization in VitroOvipositionSafe SexTestisLitter SizePhenotypeSpindle ApparatusFertilizationCytokinesisPhylogenyClutch SizeSexual MaturationOvumFlowersPosthumous ConceptionCell Cycle ProteinsSex DistributionDaphniaSex PreselectionPopulation DynamicsAmino Acid SequenceOviparityJuvenile HormonesGametogenesisPollenBreedingCaenorhabditis elegansOocytesBacterial ProteinsArabidopsisSpermatogenesisInfertility, FemaleAntsPhotoperiodApomixisKisspeptinsGene Expression Regulation, DevelopmentalSpecies SpecificitySex RatioGonadal Steroid HormonesChromosome SegregationSpores, FungalCell PolarityArabidopsis ProteinsGonadotropin-Releasing HormoneGenes, Mating Type, FungalVitellogenesisEscherichia coliCrosses, GeneticOvuleBase SequenceSeedsSperm Injections, IntracytoplasmicRotiferaLife Cycle StagesGerm CellsGenetic VariationDrosophila ProteinsSelection, GeneticInfertility, MaleWaspsSocial DominanceLarvaSurrogate Mothers