AneuploidyChromosomesChromosome MappingChromosome AberrationsChromosome DisordersChromosomes, Human, Pair 18Chromosomes, Human, XIn Situ Hybridization, FluorescenceChromosomes, Human, Pair 21Chromosomes, HumanChromosomes, Human, Pair 13TrisomyKaryotypingX ChromosomeSex ChromosomesChromosomes, Human, YSex Chromosome DisordersPrenatal DiagnosisChromosome BandingPreimplantation DiagnosisChromosome SegregationPolar BodiesChorionic Villi SamplingChromosomes, Human, Pair 1DiploidyMosaicismChromosomes, Human, Pair 7Chromosomes, Human, Pair 17Klinefelter SyndromeAmniocentesisSex Chromosome AberrationsChromosomes, BacterialDown SyndromeChromosomes, Human, Pair 11MeiosisChromosomes, Human, Pair 9Chromosomes, Human, Pair 6Chromosome DeletionPregnancyChromosomes, FungalChromosomes, PlantChromosomal InstabilityChromosomes, MammalianChromosomes, Human, Pair 16Chromosomes, Human, Pair 8Chromosomes, Human, 6-12 and XChromosomes, Human, Pair 12Chromosomes, Human, Pair 22SpermatozoaChromosome PairingChromosomes, Human, Pair 2Chromosome PaintingGene DosageXYY KaryotypeChromosomes, Human, Pair 4Chromosomes, Human, Pair 10Maternal AgeInfertility, MaleChromosomes, Human, Pair 19Fetal DiseasesComparative Genomic HybridizationChromosomes, Artificial, BacterialTranslocation, GeneticChromosomes, Human, 1-3Chromosomes, Human, Pair 5Cytogenetic AnalysisChromosomes, Human, Pair 20Chromosomes, Human, Pair 15Chromosome BreakageChromosomes, Human, 21-22 and YChromosomes, Human, Pair 14Lymphangioma, CysticMitosisPregnancy Trimester, FirstChromosomes, Human, 16-18Turner SyndromeY ChromosomeChromosomes, Artificial, YeastAmniotic FluidPloidiesMetaphaseChromosomes, Human, 13-15Genetic LinkageNondisjunction, GeneticCentromereGenetic MarkersGenetic TestingDNA ProbesPolyploidyRing ChromosomesDNAChromosome InversionFetusNuchal Translucency MeasurementChromosome PositioningPolymerase Chain ReactionChromosomes, Human, 4-5Spindle ApparatusMolecular Sequence DataPregnancy-Associated Plasma Protein-A