TrisomyAneuploidyDown SyndromeKaryotypingChromosomes, Human, Pair 18Chromosome DisordersMosaicismChromosome AberrationsChromosomes, Human, Pair 21In Situ Hybridization, FluorescenceChromosomes, Human, Pair 13Prenatal DiagnosisNondisjunction, GeneticChromosomes, Human, 16-18Nuchal Translucency MeasurementMaternal AgeChromosomal InstabilityAbnormalities, MultiplePregnancyPregnancy Trimester, FirstUltrasonography, PrenatalFetal DiseasesPreimplantation DiagnosisChorionic Gonadotropin, beta Subunit, HumanPregnancy Trimester, SecondPloidiesNasal BoneAmniocentesisChromosomes, Human, 13-15Chromosomes, Human, 6-12 and XChromosome SegregationPregnancy-Associated Plasma Protein-AChromosomes, Human, 21-22 and YAbnormal KaryotypeDiploidyChromosomes, HumanChromosome BandingPregnancy, High-RiskTranslocation, GeneticChromosomes, Human, Pair 8MonosomyChromosomes, Human, Pair 12Crown-Rump LengthPolyploidyMeiosisCytogenetic AnalysisChromosomes, Human, Pair 7CytogeneticsChorionic Villi SamplingSex Chromosome AberrationsDermatoglyphicsMaternal Serum Screening TestsSpermatozoaChromosomes, Human, XNeckKaryotypeGestational AgeSex ChromosomesAbortion, SpontaneousAneugensPolar BodiesChromosomesMitosisChromosomes, Human, YFetusCentrosomeMetaphaseMad2 ProteinsChromosomes, Human, 19-20Chromosomes, Human, 4-5Klinefelter SyndromePhenotypeSpindle ApparatusY ChromosomeGenomic InstabilityPrimed In Situ LabelingInfertility, MaleDNA, NeoplasmGene DosageTurner SyndromeXYY KaryotypePaternal AgeChromosomes, Human, Pair 9Chromosomes, Human, Pair 17Fetal HeartInfant, NewbornChromosomes, Human, 1-3Intellectual DisabilityGenetic TestingX ChromosomeOocytesSex Chromosome DisordersChromosomes, Human, Pair 16Flow CytometryComparative Genomic HybridizationAurora KinasesOligospermiaChromosomes, Human, Pair 11Spectral KaryotypingSperm Injections, Intracytoplasmic