Genes, HomeoboxPseudogenesHomeodomain ProteinsMolecular Sequence DataGene Expression Regulation, DevelopmentalBase SequenceTranscription FactorsMultigene FamilyAmino Acid SequenceEvolution, MolecularIn Situ HybridizationPhylogenyLIM-Homeodomain ProteinsOtx Transcription FactorsGoosecoid ProteinAvian ProteinsMSX1 Transcription FactorCloning, MolecularChromosome MappingSequence Homology, Amino AcidBody PatterningGene DuplicationAntennapedia Homeodomain ProteinSequence Analysis, DNASequence AlignmentMorphogenesisDrosophilaDrosophila ProteinsSequence Homology, Nucleic AcidVertebratesGene ExpressionMesodermEmbryo, NonmammalianGenomeDNA, ComplementaryBiological EvolutionRNA, MessengerTrans-Activators