Definition
Fisher's principle is an evolutionary model that explains why the sex ratio of most species that produce offspring through sexual reproduction is approximately 1:1 between males and females. A. W. F. Edwards has remarked that it is "probably the most celebrated argument in evolutionary biology".
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A.W.F. EdwardsA. W. F. EdwardsAbiogenesisAccident-pronenessAcquired characteristicAdaptationAdaptation and Natural SelectionAdaptationismAdaptive radiationAdaptive unconsciousAffect (psychology)Affect displayAffectional bondAffective neuroscienceAge disparity in sexual relationshipsAggressionAllopatric speciationAlternatives to Darwinian evolutionAltruism (biology)AnagenesisAnimal-made artAnimal cognitionAnimal communicationAnimal consciousnessAnimal cultureAnimal languageAnimal navigationAnimal trainingAnisogamyAntagonistic pleiotropy hypothesisApproximate number systemArachnophobiaAstrobiologyAttachment in adultsAttachment in childrenAttachment theoryAutomatic and controlled processesBaldwin effectBehavioral contagionBehavioral economicsBehavioral epigeneticsBehavioral modernityBehavioral neuroscienceBehavioural geneticsBiocultural anthropologyBiodiversityBiogeographyBiolinguisticsBiological anthropologyBiological determinismBiological life cycleBiological processBiological psychiatryBiology and sexual orientationBiology of human bondingBiology of romantic loveBiosocial criminologyBlending inheritanceCanalisation (genetics)CanidaeCarl DüsingCat gapCatagenesis (biology)CatastrophismCell nucleusCharles DarwinCheating (biology)ChromosomeCinderella effectCladisticsCladogenesisCoevolutionCognitive bias in animalsCognitive developmentCognitive ergonomicsCognitive ethologyCognitive moduleCognitive neuroscienceCognitive psychologyCognitive scienceCognitive specializationCognitive tradeoff hypothesisCognitivism (psychology)Common descentComparative cognitionComparative psychologyComputational theory of mindComputer-mediated communicationConcealed ovulationConnectionismConvergent evolutionCoolidge effectCooperation (evolution)CospeciationCostly signaling theory in evolutionary psychologyCriticism of evolutionary psychologyCross-cultural psychologyCultural determinismCultural evolutionCultural group selectionCultural selection theoryCultural universalDarwinian literary studiesDarwinismDavid HumeDeathDeep timeDeterminismDialogues Concerning Natural ReligionDigital media use and mental healthDinosaurDisplay rulesDistracted drivingDivergent evolutionDomain-general learningDomain-specific learningDomain specificityDomestication of the dogDual inheritance theoryDual process theoryDutton (imprint)Earliest known life formsEcological geneticsEcological speciationEcologyEffects of hormones on sexual motivationElliott SoberEmotion in animalsEmotional contagionEmpathising–systemising theoryEmpathyEndomembrane systemEngineering psychologyEnvironmental determinismEpidemiology of representationsErgonomicsEric CharnovEthologyEukaryoteEvidence of common descentEvolutionEvolution of MacropodidaeEvolution of ageingEvolution of bacteriaEvolution of biological complexityEvolution of birdsEvolution of brachiopodsEvolution of butterfliesEvolution of cellsEvolution of cephalopodsEvolution of cetaceansEvolution of cognitionEvolution of color visionEvolution of color vision in primatesEvolution of emotionEvolution of eusocialityEvolution of fishEvolution of flagellaEvolution of fungiEvolution of human intelligenceEvolution of insectsEvolution of lemursEvolution of mammalian auditory ossiclesEvolution of mammalsEvolution of molluscsEvolution of moralityEvolution of nervous systemsEvolution of primatesEvolution of reptilesEvolution of schizophreniaEvolution of sexual reproductionEvolution of sireniansEvolution of snake venomEvolution of spidersEvolution of tetrapodsEvolution of the brainEvolution of the eyeEvolution of the horseEvolution of the wolfEvolutionarily stable strategyEvolutionary aestheticsEvolutionary anthropologyEvolutionary approaches to depressionEvolutionary arms raceEvolutionary biologyEvolutionary developmental biologyEvolutionary developmental psychologyEvolutionary economicsEvolutionary educational psychologyEvolutionary epistemologyEvolutionary ethicsEvolutionary game theoryEvolutionary history of plantsEvolutionary ideas of the Scientific Revolution and EnlightenmentEvolutionary invasion analysisEvolutionary linguisticsEvolutionary medicineEvolutionary mismatchEvolutionary musicologyEvolutionary neuroscienceEvolutionary origin of religionsEvolutionary pressureEvolutionary psychiatryEvolutionary psychologyEvolutionary psychology and cultureEvolutionary psychology of languageEvolutionary psychology of religionEvolutionary taxonomyEvolutionary tradeoffExaptationExtended evolutionary synthesisExtinctionExtinction eventFacial expressionFear of fallingFemaleFemale intrasexual competitionFight-or-flight responseFitness (biology)Flynn effectFolk biologyFolk psychologyFolk taxonomyFrequency-dependent selectionFunctional psychologyFunctionalism (philosophy of mind)G factor in non-humansGame theoryGender differences in suicideGender roleGene-centered view of evolutionGene flowGenetic assimilationGenetic driftGenetic variationGeorge Christopher WilliamsGeorge R. PriceGreat ape languageGroup selectionHairHamiltonian spiteHandicap principleHistory of evolutionary psychologyHistory of evolutionary thoughtHistory of lifeHistory of molecular evolutionHistory of paleontologyHologenome theory of evolutionHomology (biology)Human bondingHuman evolutionHuman female sexualityHuman male sexualityHuman mating strategiesHuman multitaskingHuman sexual activityHuman sexualityHuman–animal communicationHuman–computer interactionHybrid (biology)Hybrid speciationHyenaImmune systemImprinted brain hypothesisInbreeding avoidanceIncest tabooInclusive fitnessInclusive fitness in humansIndeterminismIndex of evolutionary biology articlesIntroduction to evolutionInversion (evolutionary biology)James J. BullJohn Maynard SmithKin recognitionKin selectionLamarckismLanguage acquisitionLast universal common ancestorLead–crime hypothesisList of evolutionary psychologistsMacroevolutionMaleMale intrasexual competitionMate choiceMate guarding in humansMaternal bondMaternal deprivationMating preferencesMating typeMedia naturalness theoryMemeticsMendelian inheritanceMental disorders and genderMetabolismMicroevolutionMind-blindnessMissing heritability problemMitochondrionMobile phones and driving safetyModels of DNA evolutionModern synthesis (20th century)Modularity (biology)Modularity of mindMolecular evolutionMonogamy in animalsMoral foundations theoryMosaic evolutionMotor controlMotor skillMulticellular organismMultilineal evolutionMutationMutationismMutualism (biology)Natural selectionNature versus nurtureNaïve physicsNeo-DarwinismNeoevolutionismNeuroergonomicsNeuronal recycling hypothesisNeuropsychologyNeuroscience of sex differencesNeuroscience of sleepNeutral theory of molecular evolutionNonadaptive radiationNonecological speciationNumber senseNumber sense in animalsNumerical cognitionOffspringOn the Origin of SpeciesOphidiophobiaOrgan (biology)Origin and function of meiosisOrigin of avian flightOrigin of birdsOrigin of languageOrigin of speechOrthogenesisOutline of evolutionOvulatory shift hypothesisOxford University PressPair bondPanspermiaParallel evolutionParallel individuation systemParapatric speciationParental expenditureParental investmentParent–offspring conflictPaternal bondPeripatric speciationPersonality developmentPhenotypic plasticityPhilosophy of mindPhyletic gradualismPhylogenetic treePhylogeneticsPhysical attractivenessPlastidPleiotropyPoint mutationPollinator-mediated selectionPolymorphism (biology)Popular sciencePopulation (biology)Population (human biology)Population geneticsPrimate cognitionPrimatologyPrinceton, New JerseyPrinceton University PressProgrammed cell deathProtocellPsychological adaptationPsychological effects of Internet usePsychological nativismPunctuated equilibriumRandolph M. NesseRank theory of depressionRecent human evolutionReciprocal altruismReciprocal altruism in humansRed Queen hypothesisReinforcement (speciation)Richard DawkinsRobert MacArthurRobert TriversRonald FisherSaltation (biology)Science of readingScreen timeSelective breedingSex-determination systemSex and gender differences in autismSex differences in cognitionSex differences in crimeSex differences in emotional intelligenceSex differences in intelligenceSex differences in memorySex differences in narcissismSex differences in psychologySex differences in schizophreniaSex ratioSexologySexual arousalSexual attractionSexual desireSexual dimorphismSexual division of labourSexual fantasySexual jealousySexual reproductionSexual selectionSexual selection in flowering plantsSexual selection in fungiSexual selection in humansSexy son hypothesisSignalling theorySmartphones and pedestrian safetySocial aspects of televisionSocial constructionismSocial contagionSocial determinismSocial selectionSocializationSocietal effects of carsSociobiologySociocultural evolutionSpandrel (biology)SpeciationSpeciesSpecies-typical behaviorSpecies complexStandard social science modelStephen Jay GouldStructuralism (biology)Substance abuseSymbiogenesisSympatric speciationSystematicsTaxonTeleology in biologyTeleonomyTempo and Mode in EvolutionTexting while drivingThe Ancestor's TaleThe Descent of ManThe Genetical Theory of Natural SelectionThe Selfish GeneThe Structure of Evolutionary TheoryThe eclipse of DarwinismTheistic evolutionTheoretical foundations of evolutionary psychologyTheory of mindTheory of mind in animalsTimeline of the evolutionary history of lifeTool use by non-humansTransgenerational epigenetic inheritanceTransitional fossilTransmutation of speciesTrivers–Willard hypothesisUnbeatable strategyUnconscious cognitionUniformitarianismUnilineal evolutionUnit of selectionUniversity of JenaUpper Paleolithic RevolutionVariability hypothesisVicar of Bray (scientific hypothesis)Viral evolutionVisual perceptionVitalismW.D. HamiltonW. D. HamiltonWason selection taskWestermarck effect
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