GametogenesisHeredityGametogenesis, PlantGeneticsElephantiasisSpermatogenesisGerm CellsOogenesisDiseases in TwinsMeiosisTestisHistory, 19th CenturyTwins, MonozygoticTwins, DizygoticGenomic ImprintingPhenotypePollenSpermatocytesReproductionOvaryXanthurenatesGonadsSwedenEnvironmentOvuleGenes, RecessiveVitellogenesisHelleborusGenetic Predisposition to DiseaseSpermatozoaMeiotic Prophase ISpores, FungalRisk FactorsFamily HealthOocytesPedigreeGene Expression Regulation, DevelopmentalMolecular Sequence DataGenes, DominantArabidopsisFertilityGenetic LinkageHermaphroditic OrganismsEmbryonic DevelopmentsnRNP Core ProteinsArabidopsis ProteinsSex FactorsSpermatogoniaAge FactorsBiological EvolutionDNA MethylationDisorders of Sex DevelopmentGenetic VariationCyclin A1MutationProto-Oncogene Proteins c-kitInfertility, MaleDNA (Cytosine-5-)-MethyltransferaseHaploidyPolymorphism, Single NucleotidePrevalenceBase SequenceInfertilityAmino Acid SequenceGenotypeLife Cycle StagesSex DifferentiationZygoteChlamydomonas