Gene DosageDosage Compensation, GeneticMutationPhenotypeMolecular Sequence DataHeterozygoteMice, TransgenicDosage FormsAllelesBase SequenceMice, Inbred C57BLSaccharomyces cerevisiaeMice, KnockoutHomozygoteGene DeletionAmino Acid SequenceNerve Tissue ProteinsGene DuplicationX Chromosome InactivationTranscription FactorsGenotypeDNA-Binding ProteinsRNA, MessengerGene Expression RegulationMice, Mutant StrainsDown SyndromePlasmidsChromosome MappingGene Expression Regulation, DevelopmentalX ChromosomeTrisomyGene ExpressionNuclear ProteinsTranscription, GeneticChromosomes, Human, Pair 21Drosophila ProteinsHaploinsufficiencyDrosophilaCloning, MolecularPolymerase Chain ReactionDrosophila melanogasterSaccharomyces cerevisiae ProteinsAneuploidyDisease Models, AnimalModels, BiologicalHomeodomain ProteinsGenes, FungalCell LineSignal TransductionTime FactorsGenesEscherichia coliBrainCells, CulturedMembrane Proteinsalpha-SynucleinFungal ProteinsRepressor ProteinsMorphogenesisDNA Mutational AnalysisExonsPrionsPolyploidySequence DeletionGene AmplificationGenes, X-LinkedProtein BindingIn Situ Hybridization, FluorescenceBlotting, WesternSequence Homology, Amino AcidTransgenesEye AbnormalitiesCharcot-Marie-Tooth DiseaseReverse Transcriptase Polymerase Chain ReactionNeuronsGenes, RegulatorSex ChromosomesSuppression, GeneticSynucleinsProteinsDNAImmunohistochemistryCrosses, GeneticGenomic ImprintingGene Expression ProfilingDNA PrimersDose-Response Relationship, DrugHereditary Sensory and Motor NeuropathyCell DifferentiationKidneyPedigreeRecombinant ProteinsPromoter Regions, GeneticPAX2 Transcription FactorPloidiesDiploidyEmbryo, MammalianCarrier ProteinsKineticsChromosomes, Bacterial