Embryo ResearchMammalsCloning, OrganismSheepXenarthraMarsupialiaPhylogenyPlatypusOpossumsEvolution, MolecularMacropodidaePlacentaBiological EvolutionFossilsSheep DiseasesArtiodactylaMolecular Sequence DataElephantsMonodelphisMonotremataSlothsClone CellsGenomeBase SequencePaleodontologyAmino Acid SequenceInsectivoraArmadillosTetraodontiformesEchidnaSheep, DomesticSequence AlignmentCloning, MolecularSpecies SpecificityVertebratesPrimatesSequence Analysis, DNAPaleontologyX Chromosome InactivationDeoxyribodipyrimidine Photo-LyaseModels, GeneticSequence Homology, Nucleic AcidRetroelementsPregnancyLikelihood FunctionsBayes TheoremMultigene FamilyChickensGene DuplicationConserved SequenceGenetic VariationSequence Homology, Amino AcidGenomicsDNA, ComplementaryRNA, MessengerDNASheep, BighornPolymerase Chain ReactionEscherichia coliPlasmidsCell LineGenes, BacterialNucleic Acid HybridizationGenesGoatsMutationChromosome MappingRecombinant ProteinsDNA, BacterialGene ExpressionCattleDNA Restriction EnzymesDNA PrimersTranscription, GeneticBlotting, SouthernJaagsiekte sheep retrovirusPhenotypeBlotting, NorthernDNA, RecombinantGene Expression RegulationBacterial ProteinsTime FactorsRestriction MappingScrapieOpen Reading FramesFetusRodentiaGenomic LibraryKineticsLiverGenetic Complementation TestTissue DistributionGenotypeBrainCells, CulturedSwinePromoter Regions, GeneticCricetinaeGenetic VectorsModels, Biological