Genes, HomeoboxHomeodomain ProteinsGene Expression Regulation, DevelopmentalBody PatterningAntennapedia Homeodomain ProteinRhombencephalonMolecular Sequence DataTranscription FactorsMultigene FamilyMammalsVertebratesAmino Acid SequenceIn Situ HybridizationBase SequenceDrosophilaEmbryo, NonmammalianEvolution, MolecularMorphogenesisArthropodsDNA-Binding ProteinsSequence Homology, Amino AcidEmbryo, MammalianPhylogenyPolycomb Repressive Complex 1Genes, InsectCaenorhabditis elegans ProteinsBranchial RegionSomitesCnidariaMutationDrosophila melanogasterCaenorhabditis elegansBiological EvolutionMyeloid-Lymphoid Leukemia ProteinCloning, MolecularRepressor ProteinsPolycomb-Group ProteinsMesodermGenes, HelminthChick EmbryoConserved SequenceVulvaPhenotypeChordataAnimals, Genetically ModifiedCell LineSequence AlignmentZebrafish ProteinsHelminth ProteinsTranscription, GeneticTretinoinGene ExpressionNuclear ProteinsHistone-Lysine N-MethyltransferaseGene Expression RegulationLarvaSharksFushi Tarazu Transcription FactorsSignal TransductionEmbryonic and Fetal DevelopmentRNA, MessengerPlatyhelminthsProtein BindingZebrafishDNASkeletonDrosophila ProteinsEnhancer Elements, GeneticGenitaliaDNA, ComplementaryDNA PrimersLimb BudsAvian ProteinsInvertebratesMice, TransgenicHeadTailXenopus ProteinsSpecies SpecificityModels, BiologicalForelimbEmbryonic DevelopmentBinding SitesGene DuplicationModels, Genetic