PlacentaChromosomesChromosome MappingChromosome BandingX ChromosomeChromosome AberrationsSex ChromosomesChromosomes, Human, Pair 1Chromosomes, HumanChromosomes, BacterialChromosome SegregationPlacenta DiseasesChromosomes, Human, Pair 7Chromosomes, Human, Pair 11Chromosomes, Human, Pair 17Placenta PreviaChromosomes, Human, Pair 6Placenta AccretaChromosome DeletionChromosomes, Human, Pair 9Chromosomes, Human, Pair 21Chromosomes, PlantChromosomes, FungalPlacenta, RetainedChromosomes, Human, 6-12 and XPregnancyChromosomes, Human, Pair 2Chromosomes, Human, Pair 16Chromosomes, Human, Pair 22Chromosome PairingChromosomes, Human, Pair 13Chromosomes, Human, Pair 4Chromosomes, MammalianChromosomes, Human, Pair 10Chromosomes, Human, Pair 19Chromosomes, Human, Pair 8Chromosomes, Human, YChromosome DisordersChromosomes, Human, Pair 12Chromosomes, Human, XChromosomes, Artificial, BacterialChromosomes, Human, Pair 5Chromosome PaintingChromosomes, Human, 1-3Chromosomes, Human, Pair 15KaryotypingChromosomes, Human, Pair 14Molecular Sequence DataChromosomes, Human, Pair 18In Situ Hybridization, FluorescenceBase SequenceChromosomes, Human, Pair 20Chromosomes, Human, 16-18Chromosomes, Artificial, YeastGenetic LinkageTrophoblastsChromosomes, Human, 13-15Chromosome BreakageChromosomes, Human, 21-22 and YGenetic MarkersRing ChromosomesChromosome InversionChromosome PositioningChromosomes, Human, 4-5X Chromosome InactivationCentromereChorionic VilliMeiosisChromosomes, InsectTranslocation, GeneticHybrid CellsMaternal-Fetal ExchangeCloning, MolecularChromosome StructuresChromosomes, Human, 19-20MitosisAmino Acid SequenceMutationAneuploidyMetaphaseRecombination, GeneticDNACrosses, GeneticPhenotypePlacentationPregnancy ProteinsMicrosatellite RepeatsLod ScorePedigreeAllelesNucleic Acid HybridizationSequence Analysis, DNAPolymerase Chain ReactionFetusTrisomyModels, GeneticGenotypeBlotting, SouthernGenesNondisjunction, Genetic