Gene FrequencyCLOCK ProteinsCircadian ClocksPeriod Circadian ProteinsBiological ClocksCircadian RhythmARNTL Transcription FactorsCryptochromesAllelesNuclear Receptor Subfamily 1, Group D, Member 1Suprachiasmatic NucleusSelection, GeneticModels, GeneticIndians, South AmericanGenetics, PopulationPolymorphism, GeneticCircadian Rhythm Signaling Peptides and ProteinsPhotoperiodHeterozygoteGenetic VariationGenotypeBlood Group AntigensPaternityFlavoproteinsGenes, RecessiveJewsPhenotypeHeterozygote DetectionConsanguinityChronobiology DisordersElectrophoresis, Starch GelHomozygoteBasic Helix-Loop-Helix Transcription FactorsLightPhosphoglucomutaseMutationGene Expression RegulationGenes, DominantGenetic LinkageModels, BiologicalProbabilityDarknessMathematicsE-Box ElementsEsterasesEthnic GroupsPedigreeNuclear ProteinsPineal GlandInbreedingGaucher DiseaseBiological EvolutionTranscription FactorsChromosome MappingPhotoreceptor Cells, InvertebrateJet Lag SyndromeTrans-ActivatorsGenetic MarkersChronobiology PhenomenaHaptoglobinsHLA AntigensCell Cycle ProteinsGenesMolecular Sequence DataEnzymesAfrican Continental Ancestry GroupDrosophila ProteinsPolymorphism, Restriction Fragment LengthNuclear FamilyPolymerase Chain ReactionHaplotypesPeriodicityRNA, MessengerBase SequenceMelatoninFeedback, PhysiologicalTime FactorsMotor ActivityOscillometryComputer SimulationSleep Disorders, Circadian RhythmActivity CyclesEye ProteinsNuclear Receptor Subfamily 1, Group F, Member 1Mice, Inbred C57BLNIH 3T3 CellsAnimals, Genetically ModifiedArabidopsis ProteinsLod ScoreMoonJapanErythrocytesCasein Kinase IepsilonPituitary Gland, IntermediateDrosophilaGene Expression Regulation, PlantEuropean Continental Ancestry GroupArabidopsisGene ExpressionDrosophila melanogaster