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- Green-beard_effect abstract "The green-beard effect is a hypothesis used in evolutionary biology to explain selective altruism among individuals of a species. Altruistic behaviour is paradoxical when viewed in the light of old ideas of evolutionary theory that emphasised the role of competition. The evolution of altruism is better explained through the gene-centered view of evolution, which emphasizes an interpretation of natural selection from the point of view of the gene which acts as an agent that has the metaphorical \"selfish goal\" of maximizing its own propagation. A gene for (behavioral) selective altruism can be favored by (natural) selection if the altruism is primarily directed at other individuals who share the gene. Since genes are invisible, such an effect requires perceptible markers for altruistic behaviour to occur.A green-beard effect occurs when an allele, or a set of linked alleles, produce three expressed (or phenotypic) effects: a perceptible trait, — the hypothetical \"green beard\"recognition of this trait by others; andpreferential treatment of individuals with the traitThe carrier of the gene (or a specific allele) is essentially recognizing copies of the same gene (or a specific allele) in other individuals. Whereas kin selection involves altruism to related individuals who share genes in a non-specific way, green-beard alleles promote altruism toward individuals who share a gene that is expressed by a specific phenotypic trait. Some authors also note that the green-beard effects can include \"spite\" for individuals lacking the \"green-beard\" gene. This can have the effect of delineating a subset of organisms within a population that is characterized by members who show greater cooperation toward each other, this forming a \"clique\" that can be advantageous to its members who are not necessarily kin.Green-beard effect could increase altruism on green-beard phenotypes and therefore its presence in a population even if genes assist in the increase of genes that are not exact copies; all that is required is that they express the three required characteristics. Green-beard alleles are vulnerable to mutations that produce the perceptible trait without the helping behaviour.The idea of a green-beard allele was proposed by William D. Hamilton in his articles of 1964, and got the name from the example used by Richard Dawkins (\"I have a green beard and I will be altruistic to anyone else with green beard\") in The Selfish Gene (1976).".
- Green-beard_effect thumbnail Green_Beard_Effect.svg?width=300.
- Green-beard_effect wikiPageID "3364638".
- Green-beard_effect wikiPageLength "11613".
- Green-beard_effect wikiPageOutDegree "36".
- Green-beard_effect wikiPageRevisionID "703389314".
- Green-beard_effect wikiPageWikiLink Allele.
- Green-beard_effect wikiPageWikiLink Altruism.
- Green-beard_effect wikiPageWikiLink Altruism_(biology).
- Green-beard_effect wikiPageWikiLink Category:Evolutionary_biology.
- Green-beard_effect wikiPageWikiLink Category:Selection.
- Green-beard_effect wikiPageWikiLink Cell_adhesion.
- Green-beard_effect wikiPageWikiLink David_Haig_(biologist).
- Green-beard_effect wikiPageWikiLink Dictyostelium_discoideum.
- Green-beard_effect wikiPageWikiLink Evolutionary_biology.
- Green-beard_effect wikiPageWikiLink Flocculation.
- Green-beard_effect wikiPageWikiLink Gene.
- Green-beard_effect wikiPageWikiLink Gene-centered_view_of_evolution.
- Green-beard_effect wikiPageWikiLink Gene_knockout.
- Green-beard_effect wikiPageWikiLink Genetic_linkage.
- Green-beard_effect wikiPageWikiLink Gyne.
- Green-beard_effect wikiPageWikiLink John_Krebs,_Baron_Krebs.
- Green-beard_effect wikiPageWikiLink Kin_selection.
- Green-beard_effect wikiPageWikiLink Maternal_effect_dominant_embryonic_arrest.
- Green-beard_effect wikiPageWikiLink Natural_selection.
- Green-beard_effect wikiPageWikiLink Phenotype.
- Green-beard_effect wikiPageWikiLink Phenotypic_trait.
- Green-beard_effect wikiPageWikiLink Red_imported_fire_ant.
- Green-beard_effect wikiPageWikiLink Richard_Dawkins.
- Green-beard_effect wikiPageWikiLink Slime_mold.
- Green-beard_effect wikiPageWikiLink Speciation.
- Green-beard_effect wikiPageWikiLink Spore.
- Green-beard_effect wikiPageWikiLink The_Selfish_Gene.
- Green-beard_effect wikiPageWikiLink W._D._Hamilton.
- Green-beard_effect wikiPageWikiLink Wood_mouse.
- Green-beard_effect wikiPageWikiLink Yeast.
- Green-beard_effect wikiPageWikiLink Zygosity.
- Green-beard_effect wikiPageWikiLink File:BeardGreen.jpg.
- Green-beard_effect wikiPageWikiLink File:Green_Beard_Effect.svg.
- Green-beard_effect wikiPageWikiLinkText "Green-beard effect".
- Green-beard_effect wikiPageWikiLinkText "green beard".
- Green-beard_effect wikiPageWikiLinkText "green beard'".
- Green-beard_effect wikiPageWikiLinkText "green-beard effect".
- Green-beard_effect wikiPageWikiLinkText "green-beard gene".
- Green-beard_effect wikiPageUsesTemplate Template:Reflist.
- Green-beard_effect wikiPageUsesTemplate Template:Use_dmy_dates.
- Green-beard_effect subject Category:Evolutionary_biology.
- Green-beard_effect subject Category:Selection.
- Green-beard_effect hypernym Hypothesis.
- Green-beard_effect type Book.
- Green-beard_effect type Process.
- Green-beard_effect type Redirect.
- Green-beard_effect comment "The green-beard effect is a hypothesis used in evolutionary biology to explain selective altruism among individuals of a species. Altruistic behaviour is paradoxical when viewed in the light of old ideas of evolutionary theory that emphasised the role of competition.".
- Green-beard_effect label "Green-beard effect".
- Green-beard_effect sameAs Q3048950.
- Green-beard_effect sameAs Greenbeard.
- Green-beard_effect sameAs Vihreän_parran_ilmiö.
- Green-beard_effect sameAs Effet_Green-beard.
- Green-beard_effect sameAs 緑髭効果.
- Green-beard_effect sameAs Efekt_zielonej_brody_(biologia).
- Green-beard_effect sameAs m.097t_6.
- Green-beard_effect sameAs Q3048950.
- Green-beard_effect wasDerivedFrom Green-beard_effect?oldid=703389314.
- Green-beard_effect depiction Green_Beard_Effect.svg.
- Green-beard_effect isPrimaryTopicOf Green-beard_effect.