Cell PolarityEmbryo, MammalianEmbryo, NonmammalianChick EmbryoEmbryo ImplantationBlastocystEmbryonic DevelopmentGene Expression Regulation, DevelopmentalBody PatterningEmbryonic and Fetal DevelopmentBlastomeresEmbryo LossDrosophila ProteinsMorphogenesisCleavage Stage, OvumFertilization in VitroDrosophilaFrizzled ReceptorsPregnancyZebrafishZygoteGastrulaIn Situ HybridizationMorulaMolecular Sequence DataEmbryo DispositionMutationOocytesSignal TransductionZebrafish ProteinsDrosophila melanogasterMesodermAnimals, Genetically ModifiedCryopreservationEctodermMembrane ProteinsModels, BiologicalPhenotypeAmino Acid SequenceMicrotubulesXenopus ProteinsTranscription FactorsHomeodomain ProteinsCulture TechniquesBase SequenceCaenorhabditis elegansGenes, InsectEmbryo ResearchEpithelial CellsWingSingle Embryo TransferCloning, OrganismCaenorhabditis elegans ProteinsCell DifferentiationActinsCytoskeletonEctogenesisCadherinsNuclear Transfer TechniquesCell MovementWnt ProteinsEndodermEmbryonic InductionGastrulationPregnancy RateRNA, MessengerSeedsTime FactorsOogenesisXenopusBlastodermInsect ProteinsSea UrchinsTight JunctionsXenopus laevisSperm Injections, IntracytoplasmicNeural TubeEpitheliumSomitesNervous SystemIntercellular JunctionsWnt1 Proteincdc42 GTP-Binding ProteinCell DivisionNotochordFetal ViabilityGreen Fluorescent ProteinsMicroinjectionsFertilizationCell LineageEyeSequence Homology, Amino AcidParthenogenesisMicroscopy, FluorescenceDNA-Binding ProteinsMicroscopy, ElectronProtein TransportCell LinePupaLarva