Embryo LossGenes, LethalGenomeFetal DeathEmbryo, MammalianGene TargetingEmbryonic DevelopmentMammalsMice, KnockoutGene Expression Regulation, DevelopmentalHomozygoteHeterozygotePhenotypeEmbryonic and Fetal DevelopmentGenome, HumanBase SequenceMutationMice, Mutant StrainsGenome, BacterialBlastocystGenome, ViralMolecular Sequence DataMice, Inbred C57BLMice, TransgenicGene DeletionIntegrasesEvolution, MolecularAllelesCrosses, GeneticAmino Acid SequenceCell LineTranscription FactorsEmbryonic Stem CellsSequence Analysis, DNAPregnancyNuclear ProteinsPhylogenyDNA-Binding ProteinsExonsGenotypeGenome, PlantGenomicsRNA, MessengerApoptosisSequence AlignmentCarrier ProteinsSignal TransductionMesodermFibroblastsModels, GeneticCells, CulturedIsochoresShort Interspersed Nucleotide ElementsChromosomes, MammalianChromosome MappingTumor Suppressor ProteinsLong Interspersed Nucleotide ElementsIn Situ HybridizationCell Cycle ProteinsDNASequence Homology, Amino AcidStem CellsRecombination, GeneticGenome, MitochondrialReverse Transcriptase Polymerase Chain ReactionCell ProliferationConserved SequenceRetroelementsTranscription, GeneticCell DifferentiationCloning, MolecularSpecies SpecificitySyntenyTime FactorsComputational BiologyGenome, FungalGene Expression RegulationCell SurvivalDNA PrimersTumor Suppressor Protein p53PseudogenesGenome SizeDNA Transposable ElementsSequence Homology, Nucleic AcidCaenorhabditis elegansPan troglodytesEmbryo, NonmammalianGene ExpressionPromoter Regions, GeneticMutagenesisDNA, ComplementaryCaenorhabditis elegans ProteinsProtein BindingHeLa CellsGenome, ArchaealRNA, UntranslatedGene DuplicationMutagenesis, InsertionalOpen Reading FramesProteins