Gene DosageDosage Compensation, GeneticMolecular Sequence DataBase SequenceMutationRibosomal ProteinsAmino Acid SequencePhenotypeGenesTranscription, GeneticCloning, MolecularDosage FormsRNA, MessengerGene Expression RegulationAllelesGene DuplicationGene Expression ProfilingPlasmidsHeterozygoteGenotypePolymerase Chain ReactionChromosome MappingGenes, BacterialUbiquitin ThiolesterasePromoter Regions, GeneticGenes, FungalGene ExpressionX Chromosome InactivationGene DeletionMice, TransgenicSaccharomyces cerevisiaeOligonucleotide Array Sequence AnalysisSequence Analysis, DNATranscription FactorsPhylogenyX ChromosomeHomozygoteHaploinsufficiencyDown SyndromeBacterial ProteinsEscherichia coliTrisomyMultigene FamilyDNAGene Expression Regulation, DevelopmentalDNA-Binding ProteinsRestriction MappingChromosomes, Human, Pair 21Nucleic Acid HybridizationMice, Inbred C57BLReverse Transcriptase Polymerase Chain ReactionCarrier ProteinsAneuploidyThiolester HydrolasesGenes, RegulatorDNA PrimersGene AmplificationSequence Homology, Nucleic AcidSequence Homology, Amino AcidExonsIn Situ Hybridization, FluorescenceGenetic VariationGene Expression Regulation, FungalDNA, BacterialModels, GeneticBlotting, SouthernSuppression, GeneticMice, KnockoutDNA Mutational AnalysisCrosses, GeneticEvolution, MolecularIntronsPolyploidyMice, Mutant StrainsGenes, X-LinkedSpecies SpecificityDrosophila melanogasterSequence DeletionGenes, ViralSequence AlignmentFungal ProteinsBlotting, NorthernChromosomes, BacterialPolymorphism, GeneticCell LineEye AbnormalitiesCharcot-Marie-Tooth DiseaseMembrane ProteinsTime FactorsGene Expression Regulation, PlantSaccharomyces cerevisiae ProteinsMyelin ProteinsSex ChromosomesProteinsDisease Models, AnimalDrosophila ProteinsRNA, RibosomalOperonCapsidGenomic Imprinting