Circadian ClocksCLOCK ProteinsBiological ClocksCircadian RhythmARNTL Transcription FactorsPeriod Circadian ProteinsCryptochromesNuclear Receptor Subfamily 1, Group D, Member 1PhotoperiodCircadian Rhythm Signaling Peptides and ProteinsFlavoproteinsBasic Helix-Loop-Helix Transcription FactorsFeedback, PhysiologicalLightArabidopsis ProteinsNeurospora crassaTranscription FactorsArabidopsisGene Expression Regulation, PlantGene Expression RegulationDrosophila ProteinsNuclear ProteinsE-Box ElementsMutationPromoter Regions, GeneticDarknessPhotoreceptor Cells, InvertebrateTrans-ActivatorsNIH 3T3 CellsChronobiology DisordersNuclear Receptor Subfamily 1, Group F, Member 1Suprachiasmatic NucleusPineal GlandArylalkylamine N-AcetyltransferaseCell Cycle ProteinsActivity CyclesMotor ActivityMelatoninOscillometryRNA, MessengerTranscription, GeneticModels, BiologicalSomitesMice, Inbred C57BLChronobiology PhenomenaEye ProteinsJet Lag SyndromeSynechococcusMice, KnockoutPeriodicityTime FactorsPhylogenyLuciferasesDrosophilaLight Signal TransductionMolecular Sequence DataEvolution, MolecularMammalsCasein Kinase IdeltaAging, PrematureRetinoid X Receptor betaAnimals, Genetically ModifiedDrosophila melanogasterReceptors, G-Protein-CoupledFossilsFeedbackHelix-Loop-Helix MotifsLiverChronotherapyLocomotionGene ExpressionDrug ChronotherapyFeeding BehaviorModels, GeneticZebrafishSignal TransductionDimerizationProtein BindingNeurosporaDNA-Binding ProteinsDiapause, InsectBehavior, Animal