HomeostasisGene DosageCation Transport ProteinsCopperDosage Compensation, GeneticPhenotypeMutationDosage FormsMice, Inbred C57BLMice, KnockoutMice, TransgenicHeterozygoteAllelesGene DuplicationX Chromosome InactivationGene DeletionGene Expression RegulationDown SyndromeMolecular Sequence DataX ChromosomeSaccharomyces cerevisiaeHomozygoteTrisomySignal TransductionGenotypeHaploinsufficiencyChromosomes, Human, Pair 21Transcription FactorsRNA, MessengerBase SequenceGenes, FungalMice, Mutant StrainsAneuploidyTranscription, GeneticPlasmidsGenesChromosome MappingGene ExpressionGene Expression Regulation, DevelopmentalPolyploidyModels, BiologicalGene AmplificationIn Situ Hybridization, FluorescenceDNA-Binding ProteinsReverse Transcriptase Polymerase Chain ReactionGenes, X-LinkedCrosses, GeneticDisease Models, AnimalEscherichia coliPolymerase Chain ReactionEye AbnormalitiesCharcot-Marie-Tooth DiseaseSuppression, GeneticGenes, RegulatorCells, CulturedAmino Acid SequenceSex ChromosomesGene Expression ProfilingOligonucleotide Array Sequence AnalysisSaccharomyces cerevisiae ProteinsGenomic ImprintingDrosophila ProteinsMembrane ProteinsLiverGene Expression Regulation, FungalCloning, MolecularModels, GeneticHereditary Sensory and Motor NeuropathyDrosophila melanogasterRepressor ProteinsPAX2 Transcription FactorDose-Response Relationship, DrugTime FactorsCell ProliferationPloidiesDiploidyGenes, BacterialHomeodomain ProteinsIronDrosophilaCalciumPromoter Regions, GeneticCell LineMorphogenesisGlucoseChromosomes, BacterialCell DifferentiationGenes, LethalFungal ProteinsSurvival of Motor Neuron 1 ProteinChromosome AberrationsDNA Mutational AnalysisHaploidySequence DeletionInsulin ResistanceMyelin ProteinsInsulinEnergy MetabolismGenetic Complementation TestChromosomes