Gene DosageAllelesDosage Compensation, GeneticMolecular Sequence DataBase SequenceMutationGenotypeChromosome MappingGenesPhenotypeGenome, HumanHeterozygoteExonsAmino Acid SequencePolymorphism, GeneticCloning, MolecularGene FrequencyHomozygotePolymerase Chain ReactionIntronsTranscription, GeneticRNA, MessengerDNAModels, GeneticPolymorphism, Single NucleotideDosage FormsGene Expression RegulationGene DuplicationGenetic Predisposition to DiseaseSequence Analysis, DNAGenetic VariationX ChromosomePromoter Regions, GeneticGene ExpressionGene DeletionSaccharomyces cerevisiaeTranscription FactorsX Chromosome InactivationDNA, ComplementaryGene Expression ProfilingGenes, FungalChromosomes, Human, Pair 21PlasmidsHaplotypesMice, TransgenicHybrid CellsOligonucleotide Array Sequence AnalysisDown SyndromeCrosses, GeneticSequence Homology, Amino AcidIn Situ Hybridization, FluorescenceRestriction MappingDNA-Binding ProteinsDNA PrimersDNA Mutational AnalysisEvolution, MolecularTrisomyHaploinsufficiencyMice, Inbred C57BLMultigene FamilyBlotting, SouthernSequence Homology, Nucleic AcidCell LineGenetic Complementation TestGenetic LinkageSuppression, GeneticGene Expression Regulation, DevelopmentalProteinsNucleic Acid HybridizationGenetic MarkersGene AmplificationGenes, RegulatorReverse Transcriptase Polymerase Chain ReactionAneuploidyDatabases, GeneticEscherichia coliMice, Mutant StrainsSequence AlignmentAlternative SplicingPedigreeGenes, LethalDrosophila melanogasterGenetic Diseases, InbornSequence DeletionGenes, DominantPolyploidyNuclear ProteinsSaccharomyces cerevisiae ProteinsMice, KnockoutGenetic VectorsDrosophila ProteinsFungal ProteinsGenes, X-LinkedComputational BiologyRecombination, GeneticGene LibraryDrosophilaExpressed Sequence TagsChromosomesDiploidy