ArchaeaGenomeGenome, BacterialGenome, ViralGenome, ArchaealArchaeal ProteinsGenes, ArchaealGenome, PlantGenome, HumanPhylogenyDNA, ArchaealRNA, ArchaealGenome, MitochondrialSequence Analysis, DNAGenome, FungalEvolution, MolecularCrenarchaeotaBase SequenceGenome SizeMolecular Sequence DataGene Expression Regulation, ArchaealHaloferax volcaniiBacteriaGenomicsMethanococcusMethaneGenome, InsectSequence AlignmentGenome, ProtozoanSulfolobusAmino Acid SequenceMethanobacteriaceaeGenome, ChloroplastChromosome MappingOpen Reading FramesMethanosarcinaEuryarchaeotaNitrificationMethanobacteriumDesulfurococcaceaeRNA, Ribosomal, 16SHalobacterialesComputational BiologyChromosomes, ArchaealPyrococcusGene Transfer, HorizontalMethanosarcinalesSequence Homology, Amino AcidEukaryotic CellsSpecies SpecificityHaloferaxSulfolobus acidocaldariusPyrococcus abyssiConserved SequenceMultigene FamilyGenetic VariationModels, GeneticMethanosarcinaceaeGenome, HelminthGene OrderDNA, BacterialGenome, PlastidEukaryotaSulfolobus solfataricusSeawaterGeologic SedimentsSyntenyHuman Genome ProjectCloning, MolecularProkaryotic CellsBacterial ProteinsBase CompositionPyrococcus furiosusSequence Homology, Nucleic AcidMethanococcalesArchaeoglobus fulgidusDatabases, GeneticDNA, ViralThermococcusArchaeal VirusesRecombination, GeneticHalobacteriaceaeGenes, BacterialMethanosarcina barkeriGene DuplicationRepetitive Sequences, Nucleic AcidSoftwareAmmoniaEscherichia coliBiological EvolutionMutationDNA, RibosomalRNA, TransferMolecular Sequence AnnotationNucleic Acid ConformationTranscription, GeneticDNA Transposable ElementsThermoplasmaChromosomes, Artificial, BacterialRNA, Viral