Agouti Signaling ProteinPoint MutationMutation, MissenseHair ColorMutationReceptors, MelanocortinReceptors, CorticotropinFrameshift MutationPigmentationGerm-Line MutationAgouti-Related ProteinIntercellular Signaling Peptides and ProteinsPedigreeReceptor, Melanocortin, Type 1AllelesBase SequenceExonsalpha-MSHMolecular Sequence DataMutation RateHeterozygotePolymerase Chain ReactionProteinsAmino Acid SubstitutionDNA Mutational AnalysisPhenotypeAmino Acid SequenceGenes, RecessiveGenotypeMutagenesisPolymorphism, Single-Stranded ConformationalGenes, DominantMelaninsMutagenesis, Site-DirectedChromosome MappingSequence Analysis, DNACodon, NonsenseHomozygoteGenes, LethalSequence DeletionDNA PrimersGenes, Intracisternal A-ParticleMice, Mutant StrainsMelanocyte-Stimulating HormonesRats, Inbred LECSkin PigmentationGenetic TestingProtein Structure, TertiaryGenetic LinkageRNA, MessengerReceptor, Melanocortin, Type 2Cell LineReceptor, Melanocortin, Type 4Escherichia coliSuppression, GeneticRodentiaCrosses, GeneticMelanocytesMelanophoresCloning, Molecular