fisherian evolution
holds that phenotypic differentiation derives from positive natural selection primarily; random drift in small populations is less important. Named for R. A. Fisher, not fish

Dictionary of ichthyology. 2009.

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  • Fisherian runaway — is a model of sexual selection, first proposed by R.A. Fisher in 1915 [Fisher, R.A. 1915 The evolution of sexual preference, Eugenics Review 7: 184 192] , and expanded upon in his 1930 book The Genetical Theory of Natural Selection [Fisher, R.A.… …   Wikipedia

  • Evolution — ist die Veränderung der vererbbaren Merkmale einer Population von Lebewesen von Generation zu Generation. Diese Merkmale sind in Form von Genen kodiert, die bei der Fortpflanzung kopiert und an den Nachwuchs weitergegeben werden. Durch Mutationen …   Deutsch Wikipedia

  • Evolution — This article is about evolution in biology. For other uses, see Evolution (disambiguation). For a generally accessible and less technical introduction to the topic, see Introduction to evolution. Part of a series on …   Wikipedia

  • Evolution (Biologie) — Stammbaum des Lebens, der das Auszweigen der heutigen Arten von einer urtümlichen Form verdeutlicht.[1] Die drei Domänen sind farblich getrennt (blau: Bakterien; grün: Archaeen; …   Deutsch Wikipedia

  • Evolution of dominance — The evolution of dominance concerns the evolution of genetic dominance. The central argument, that modifier genes act upon other genes to make them dominant or recessive, and that these are then themselves subject to natural selection was first… …   Wikipedia

  • Biologische Evolution — Stammbaum des Lebens, der das Auszweigen der heutigen Arten von einer urtümlichen Form verdeutlicht.[1] Die drei Domänen sind farblich getrennt (blau: Bakterien; grün: Archaeen; …   Deutsch Wikipedia

  • Mate choice — Mate choice, or intersexual selection, is an evolutionary process in which selection of a mate depends on attractiveness of its traits. It is one of two components of sexual selection (the other is male male competition or intrasexual selection) …   Wikipedia

  • Signalling theory — Within evolutionary biology, signalling theory refers to a body of theoretical work examining communication between individuals. The central question is when animals with conflicting interests should be expected to communicate honestly .… …   Wikipedia

  • Ronald Fisher — R. A. Fisher Born 17 February 1890(1890 02 17) East Finchley, London …   Wikipedia

  • Effective population size — In population genetics, the concept of effective population size N e was introduced by the American geneticist Sewall Wright, who wrote two landmark papers on it (Wright 1931, 1938). He defined it as the number of breeding individuals in an… …   Wikipedia

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