Gene DosageDosage Compensation, GeneticPhenotypeDosage FormsMutationGene DuplicationHeterozygoteAllelesX Chromosome InactivationDown SyndromeMolecular Sequence DataX ChromosomeTrisomyGenotypeHaploinsufficiencyChromosomes, Human, Pair 21Base SequenceHomozygoteGene DeletionChromosome MappingMice, TransgenicSaccharomyces cerevisiaeAneuploidyGenes, FungalGenesModels, GeneticPlasmidsMice, Inbred C57BLPolyploidyTranscription, GeneticIn Situ Hybridization, FluorescenceGene AmplificationGene Expression RegulationGene Expression Regulation, DevelopmentalGenes, X-LinkedTranscription FactorsEscherichia coliModels, BiologicalRNA, MessengerCrosses, GeneticPolymerase Chain ReactionGenes, RegulatorMice, Mutant StrainsEye AbnormalitiesMice, KnockoutCharcot-Marie-Tooth DiseaseSex ChromosomesEvolution, MolecularGene Expression ProfilingSuppression, GeneticGene ExpressionOligonucleotide Array Sequence AnalysisGenomic ImprintingAmino Acid SequencePloidiesDiploidyHereditary Sensory and Motor NeuropathyDNA-Binding ProteinsChromosome AberrationsCloning, MolecularPAX2 Transcription FactorGenes, BacterialHaploidyExonsNucleic Acid HybridizationChromosomes, BacterialChromosomesDNADrosophila melanogasterDisease Models, AnimalDrosophila ProteinsDrosophilaGene Expression Regulation, FungalHeteroduplex AnalysisMorphogenesisDNA Mutational AnalysisSurvival of Motor Neuron 1 ProteinSaccharomyces cerevisiae ProteinsGenes, LethalSequence Analysis, DNASignal TransductionAlgorithmsHomeodomain ProteinsSMN Complex ProteinsTime FactorsSurvival of Motor Neuron 2 ProteinMultigene FamilyMyelin ProteinsSequence DeletionNucleic Acid Amplification TechniquesFungal ProteinsGenetic VariationPhylogenyRepressor ProteinsFractalsReverse Transcriptase Polymerase Chain ReactionComparative Genomic HybridizationRNA, Long NoncodingDiGeorge SyndromeRNA, Ribosomal