Nondisjunction, GeneticSyndromeMeiosisDown SyndromeChromosomes, Human, Pair 21AneuploidyCrossing Over, GeneticTrisomySex ChromosomesAbnormalities, Radiation-InducedChromosomesChromosome SegregationX ChromosomeChromosome AberrationsMaternal AgeRecombination, GeneticY ChromosomeCrosses, GeneticMetabolic Syndrome XCentromerePotoroidaeChromosome MappingTranslocation, GeneticMosaicismChromosomes, FungalMitosisChromatidsKaryotypingChromosome DisordersGenetic MarkersSecale cerealePaternal AgeDiploidyIn Situ Hybridization, FluorescenceChromosomes, InsectGenetic TechniquesMutationNucleolus Organizer RegionSex Chromosome AberrationsNephrotic Syndromep-FluorophenylalanineSjogren's SyndromeDrosophila melanogasterChromosomes, Human, Pair 18X-RaysHeterozygoteSpermatocytesChromosomes, Human, Pair 13MetaphaseOocytesMutagensTurner SyndromeHygromycin BPhosphoribosylglycinamide FormyltransferaseChromosome BreakageChromosome BandingSister Chromatid ExchangeMonosomySynaptonemal ComplexAbnormalities, MultipleMyelodysplastic SyndromesPhenotypePolyploidyGenes, RecessiveCushing SyndromeGenes, DominantChromosomes, PlantGenotypeHomozygotePollenAllelesAcute Coronary SyndromePolycystic Ovary SyndromeSpermatozoaSporesWilliams SyndromeAnaphaseDrosophilaZea maysDiGeorge SyndromeSaccharomyces cerevisiaeHorner SyndromePrader-Willi SyndromeLong QT Syndrome