Nondisjunction, GeneticMeiosisChromosomes, Human, Pair 21AneuploidyCrossing Over, GeneticDown SyndromeTrisomySex ChromosomesAbnormalities, Radiation-InducedChromosomesBipolar DisorderChromosome SegregationX ChromosomeChromosome AberrationsMaternal AgeRecombination, GeneticY ChromosomeCrosses, GeneticMental DisordersAnxiety DisordersMood DisordersCentromerePotoroidaeChromosome MappingChromosomes, FungalMitosisChromatidsTranslocation, GeneticChromosome DisordersGenetic MarkersSecale cerealeMosaicismChromosomes, InsectPaternal AgeDiploidyGenetic TechniquesDiagnostic and Statistical Manual of Mental DisordersKaryotypingIn Situ Hybridization, FluorescenceNucleolus Organizer Regionp-FluorophenylalanineMutationSex Chromosome AberrationsDrosophila melanogasterX-RaysDepressive Disorder, MajorChromosomes, Human, Pair 18SpermatocytesAttention Deficit Disorder with HyperactivityChromosomes, Human, Pair 13MetaphaseHeterozygoteMutagensOocytesDepressive DisorderHygromycin BPhosphoribosylglycinamide FormyltransferaseObsessive-Compulsive DisorderSister Chromatid ExchangeStress Disorders, Post-TraumaticAutistic DisorderChromosome BreakageSynaptonemal ComplexChromosome BandingPolyploidyMonosomyPhobic DisordersChild Development Disorders, PervasivePsychotic DisordersSubstance-Related DisordersChromosomes, PlantPollenGenotypeGenes, DominantAllelesGenes, RecessiveSpermatozoaSporesHomozygotePhenotypeDrosophilaAnaphaseZea maysSaccharomyces cerevisiaeConduct Disorder