Body PatterningGene Expression Regulation, DevelopmentalDrosophila ProteinsHedgehog ProteinsMorphogenesisModels, BiologicalSignal TransductionTranscription FactorsMolecular Sequence DataHomeodomain ProteinsEmbryo, NonmammalianIn Situ HybridizationZebrafishZebrafish ProteinsMesodermEctodermBone Morphogenetic ProteinsEmbryonic InductionExtremitiesRhombencephalonDrosophilaGenes, HomeoboxXenopus ProteinsFibroblast Growth Factor 8GastrulaWingSomitesLimb BudsWnt ProteinsInsect ProteinsBranchial RegionWnt1 ProteinFibroblast Growth FactorsChick EmbryoNodal ProteinMutationPhenotypeGenes, InsectEndodermBone Morphogenetic Protein 4Nervous SystemOrganizers, EmbryonicHeadTrans-ActivatorsAnimals, Genetically ModifiedEmbryonic DevelopmentNeural TubeVertebratesNeural CrestDrosophila melanogasterNotochordTelencephalonEmbryo, MammalianCell DifferentiationXenopusOrganogenesisDNA-Binding ProteinsT-Box Domain ProteinsGastrulationCell LineageGoosecoid ProteinReceptors, NotchRepressor ProteinsFetal ProteinsNerve Tissue ProteinsDevelopmental BiologyEyePlant EpidermisTriboliumArabidopsis ProteinsLimb Deformities, CongenitalNeural PlatePolydactylyAmino Acid SequenceOtx Transcription FactorsArabidopsisLIM-Homeodomain ProteinsIndoleacetic AcidsBlastodermPaired Box Transcription FactorsProsencephalonTretinoinAvian ProteinsProteinsMice, Mutant StrainsNodal Signaling LigandsQuailCentral Nervous SystemBasic Helix-Loop-Helix Transcription FactorsXenopus laevisBase SequenceMeristemIntercellular Signaling Peptides and ProteinsKruppel-Like Transcription FactorsGene Expression Regulation, Plant