VertebratesHagfishesZebrafishEmbryo, NonmammalianLampreysGene DuplicationEvolution, MolecularXenopus ProteinsGene Expression Regulation, DevelopmentalSharksZebrafish ProteinsBlastulaBody PatterningOpsinsGastrulaMolecular Sequence DataPhylogenyFishesXenopus laevisXenopusOryziasNodal ProteinBiological EvolutionAmino Acid SequenceIn Situ HybridizationEmbryonic DevelopmentGenomeSequence AlignmentMesodermMultigene FamilyConserved SequenceSequence Homology, Amino AcidHomeodomain ProteinsBase SequenceNeural CrestAnimals, Genetically ModifiedEctodermSignal TransductionEndodermMorphogenesisTranscription FactorsSpecies SpecificityChick EmbryoWnt ProteinsCloning, MolecularFibroblast Growth FactorsModels, GeneticRNA, MessengerChordata, NonvertebrateReptilesInvertebratesAmphibiansChordataChickensCiona intestinalisTakifuguPetromyzonMammalsGenes, HomeoboxDrosophila ProteinsUrochordataDrosophilaFish ProteinsLizardsBirdsTetraodontiformesSyntenyPhotoreceptor Cells, VertebrateDNA, ComplementaryExtremitiesRhombencephalonAvian ProteinsLarvaModels, BiologicalNervous SystemJawDrosophila melanogasterMutationTurtlesSequence Analysis, DNAFossilsEmbryonic InductionDNA-Binding ProteinsSequence Homology, Nucleic AcidSkates (Fish)Nerve Tissue ProteinsEyeProtein Structure, TertiaryRetinaGoldfishCentral Nervous SystemUrodelaPaired Box Transcription FactorsBone Morphogenetic ProteinsRanidaeCell DifferentiationCaenorhabditis elegansInsect ProteinsAnimal FinsDNA Primers