Epigenesis, GeneticEpigenomicsDNA MethylationBody PatterningHistonesChromatinGene Expression Regulation, DevelopmentalHomeodomain ProteinsEmbryo, NonmammalianHedgehog ProteinsMorphogenesisIn Situ HybridizationZebrafishZebrafish ProteinsDrosophila ProteinsMesodermEctodermBone Morphogenetic ProteinsEmbryonic InductionExtremitiesTranscription FactorsRhombencephalonDrosophilaSignal TransductionGenes, HomeoboxXenopus ProteinsFibroblast Growth Factor 8GastrulaWingSomitesLimb BudsWnt ProteinsInsect ProteinsBranchial RegionWnt1 ProteinFibroblast Growth FactorsChick EmbryoNodal ProteinMutationPhenotypeGenes, InsectEndodermBone Morphogenetic Protein 4Nervous SystemOrganizers, EmbryonicHeadTrans-ActivatorsAnimals, Genetically ModifiedModels, BiologicalEmbryonic DevelopmentMolecular Sequence DataNeural 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