GymnospermsPhylogenyPlantsAngiospermsPlants, Genetically ModifiedPlant ProteinsPlant LeavesGenes, PlantPiceaCycasDNA, PlantConiferophytaEvolution, MolecularPinusPlant RootsTaxusPinaceaeGenome, PlantGinkgo bilobaPinus taedaPlant ExtractsPlant ShootsCycadophytaPlants, MedicinalFernsPlant DevelopmentTreesZamiaceaeEphedraFossilsBiological EvolutionArabidopsisPlants, ToxicSequence Analysis, DNASelaginellaceaeMolecular Sequence DataPlant CellsSeedsSpecies SpecificityPlant StemsOvuleDNA, ChloroplastSequence AlignmentOcoteaFlowersLigninBryophytaGenome, ChloroplastCambiumPseudotsugaBase SequenceExtinction, BiologicalCupressaceaeGnetumAmino Acid SequenceViridiplantae