MosaicismDown SyndromeSyndromeMosaic VirusesTobacco Mosaic VirusTrisomyChromosomes, Human, Pair 21Prenatal DiagnosisTurner SyndromeKaryotypingSex Chromosome AberrationsMaternal AgeChromosome DisordersAbnormalities, MultiplePregnancyChromosomes, Human, 21-22 and YGonadal Dysgenesis, MixedAmniocentesisMetabolic Syndrome XEstriolIntellectual DisabilityPregnancy Trimester, SecondAneuploidyChromosome AberrationsPhenotypePedigreeNondisjunction, GeneticInfant, NewbornKlinefelter SyndromeAlfalfa mosaic virusUniparental DisomyMutationPigmentation DisordersIn Situ Hybridization, FluorescenceLeukemia, Megakaryoblastic, AcuteMolecular Sequence DataCucumovirusChorionic Villi SamplingFetal DiseasesBase SequenceCryopyrin-Associated Periodic SyndromesTobaccoNephrotic SyndromeChromosomes, Human, XAbortion, EugenicSjogren's SyndromeChromosome BandingGenetic CounselingCaulimovirusX ChromosomePlants, Toxicalpha-FetoproteinsPlant DiseasesNasal BonePrader-Willi SyndromeComovirusCraniofacial AbnormalitiesRing ChromosomesNuchal Translucency MeasurementAllelesDNA Mutational AnalysisUltrasonography, PrenatalPregnancy, High-RiskHeart Defects, CongenitalDermatoglyphicsPlant Viral Movement ProteinsPregnancy Trimester, FirstNeurofibromatosis 2Genetic TestingWilliams SyndromeEpidermolysis BullosaWiskott-Aldrich SyndromeMonosomyGerm-Line MutationPolymerase Chain ReactionMyelodysplastic SyndromesRNA, ViralY ChromosomePregnancy-Associated Plasma Protein-AChromosomes, Human, 13-15Chromosomes, Human, Pair 18Chorionic Gonadotropin, beta Subunit, HumanBromovirusPreimplantation DiagnosisPotyvirusGenotypeCushing SyndromeHeterozygoteDisease Models, AnimalFalse Positive ReactionsTranslocation, GeneticChromosome DeletionCase-Control StudiesPaternal AgeAcute Coronary SyndromePolycystic Ovary SyndromeAmniotic FluidGonadal DysgenesisAmino Acid SequenceGene Dosage