MosaicismTrisomyDown SyndromeKaryotypingChromosome DisordersChromosomes, Human, Pair 18Chromosomes, Human, 16-18Prenatal DiagnosisSex Chromosome AberrationsAbnormalities, MultipleChromosomes, Human, Pair 21Chromosome AberrationsTurner SyndromeChromosomes, Human, Pair 13AneuploidyChromosomes, Human, 13-15Nondisjunction, GeneticIn Situ Hybridization, FluorescenceGonadal Dysgenesis, MixedChromosomes, Human, 21-22 and YNuchal Translucency MeasurementChromosome BandingChromosomes, Human, 6-12 and XPregnancyMaternal AgeChorionic Villi SamplingChorionic Gonadotropin, beta Subunit, HumanDermatoglyphicsUniparental DisomyAmniocentesisPregnancy Trimester, FirstPigmentation DisordersUltrasonography, PrenatalMonosomyFetal DiseasesPedigreePregnancy-Associated Plasma Protein-AIntellectual DisabilityPregnancy Trimester, SecondNasal BoneTranslocation, GeneticChromosomes, Human, Pair 8Genetic CounselingChromosomes, Human, XCryopyrin-Associated Periodic SyndromesSyndromeChromosomes, Human, Pair 7Pregnancy, High-RiskPhenotypeX ChromosomeCrown-Rump LengthCytogenetic AnalysisChromosomes, Human, Pair 12Ring ChromosomesKlinefelter SyndromeInfant, NewbornPreimplantation DiagnosisCytogeneticsEpidermolysis BullosaNeurofibromatosis 2Y ChromosomeChromosomes, Human, 19-20Chromosomes, Human, 4-5Chromosomes, HumanChromosome DeletionNeckSex ChromosomesFetusGestational AgeChromosomes, Human, YChromosomes, Human, Pair 16Abortion, SpontaneousGonadal DysgenesisAllelesGerm-Line MutationChromosomes, Human, Pair 20Chromosomes, Human, 1-3Genetic MarkersMutationChromosome InversionAmniotic FluidDosage Compensation, GeneticChromosomes, Human, Pair 5Chromosomes, Human, Pair 15Chromosomes, Human, Pair 9Facial BonesChromosomes, Human, Pair 11