IntronsRNA SplicingBase SequenceMolecular Sequence DataExonsPhylogenySpliceosomesEvolution, MolecularAmino Acid SequenceRNA Splice SitesRNA PrecursorsCloning, MolecularSequence Analysis, DNASequence AlignmentSequence Homology, Nucleic AcidNucleic Acid ConformationGenesAlternative SplicingSpecies SpecificityBiological EvolutionSequence Homology, Amino AcidConserved SequenceRNA, MessengerModels, GeneticTranscription, GeneticGenomeRNA, Small NuclearOpen Reading FramesPolymerase Chain ReactionBacteriaDNARestriction MappingRNA, CatalyticMutationRNA, FungalEuglena gracilisDNA, ComplementaryChromosome MappingBase CompositionGenes, FungalChlorophytaFungiGenes, PlantTrans-SplicingDNA, RibosomalEukaryotaBlotting, SouthernMultigene FamilyDNA, FungalSaccharomyces cerevisiaeEukaryotic CellsEscherichia coliGenomic LibraryPlantsRNADNA PrimersRNA, RibosomalAscomycotaDNA, BacterialDrosophila melanogasterCryptophytaCaenorhabditis elegansVertebratesPromoter Regions, GeneticRetroelementsGenomicsDNA Transposable ElementsDatabases, Nucleic AcidAquatic OrganismsBacterial ProteinsTetrahymenaGenetic VariationRibonucleoproteins, Small NuclearPseudogenesArabidopsisExpressed Sequence TagsRNA, Ribosomal, Self-SplicingDNA, IntergenicOrganisms, Genetically ModifiedRibonucleoprotein, U2 Small NuclearCodonDNA, MitochondrialUntranslated RegionsRepetitive Sequences, Nucleic AcidNucleic Acid HybridizationInvertebratesNaegleriaPlasmidsRNA, BacterialDNA Restriction EnzymesRNA, Ribosomal, 16SGene LibraryFishes, PoisonousRNA, PlantCulture MediaGenome, FungalNucleic Acid PrecursorsDrosophilaGenes, ProtozoanAnti-Bacterial Agents