Sex ChromosomesTrisomySex Chromosome AberrationsChromosomesChromosome MappingX ChromosomeChromosomes, Human, Pair 13Sex Chromosome DisordersChromosomes, Human, Pair 18Chromosome AberrationsY ChromosomeKaryotypingAneuploidyChromosomes, Human, Pair 21Chromosome BandingChromosome DisordersChromosomes, Human, XDown SyndromeIn Situ Hybridization, FluorescenceNondisjunction, GeneticChromosomes, Human, YSex Determination ProcessesChromosomes, HumanChromosome PairingChromosomes, PlantSileneTurner SyndromeChromosomes, Human, 16-18MeiosisX Chromosome InactivationChromosome SegregationChromosomes, Human, Pair 1MosaicismGenes, Y-LinkedChromosomes, Human, 13-15Genes, X-LinkedChromosome PaintingChromosomes, Artificial, BacterialChromosomes, BacterialPlatypusChromosomes, Human, Pair 7Chromosomes, InsectSex CharacteristicsChromosomes, Human, Pair 11Chromosomes, Human, Pair 17Chromosome DeletionSex ChromatinChromosomes, Human, Pair 6Chromosomes, FungalKlinefelter SyndromeChromosomes, Human, Pair 15Chromosomes, MammalianXYY KaryotypeChromosomes, Human, Pair 9Translocation, GeneticSpermatocytesPrenatal DiagnosisGenes, sryGenetic LinkagePachytene StageEvolution, MolecularChromosome StructuresChromosomes, Human, 6-12 and XNuchal Translucency MeasurementChromosomes, Human, Pair 2Dosage Compensation, GeneticDiploidyChromosomes, Human, Pair 16Chromosomes, Human, Pair 22Maternal AgeCaricaChromosomes, Human, Pair 4Chromosomes, Human, Pair 10Chromosomes, Human, Pair 19Chromosomes, Human, Pair 8Molecular Sequence DataSex FactorsChromosomes, Human, Pair 20Cytogenetic AnalysisChromosomes, Human, Pair 12Genetic MarkersChromosomes, Human, Pair 5Pregnancy-Associated Plasma Protein-AAbortion, SpontaneousSex DifferentiationPregnancyChromosomes, Human, 1-3Base SequenceChorionic Gonadotropin, beta Subunit, HumanRecombination, GeneticChromosomes, Human, 21-22 and YChromosomes, Human, Pair 14Chromosome InversionChromosomes, Artificial, YeastCrosses, GeneticSex Determination AnalysisFetal DiseasesCentromereChromosome BreakageTrophoblastic Tumor, Placental Site