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Fisher's fundamental theorem of natural selection is an idea about genetic variance in population genetics developed by the statistician and evolutionary biologist Ronald Fisher. The proper way of applying the abstract mathematics of the theorem to actual biology has been a matter of some debate. It states: "The rate of increase in fitness of any organism at any time is equal to its genetic variance in fitness at that time." Or in more modern terminology:

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  • Fishers Fundamentales Theorem der natürlichen Selektion (de)
  • Teorema fundamental de la selección natural (es)
  • Fisher's fundamental theorem of natural selection (en)
  • Teorema fondamentale della selezione naturale (it)
  • 费雪自然选择定理 (zh)
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  • Das Fundamentale Theorem der natürlichen Selektion formuliert mathematische Gesetzmäßigkeiten der Populationsgenetik für die Zunahme der Fitness von Organismen. (de)
  • Il teorema fondamentale della selezione naturale è un teorema proposto nel 1930 da Ronald Fisher che afferma che in presenza di selezione naturale la fitness media di una popolazione tende ad aumentare. (it)
  • 费雪自然选择基本定理(英語:Fisher's fundamental theorem of natural selection),由羅納德·費雪爵士在1933年首次提出,是现代进化论中关于自然选择的一个基本定理,该定理显示平均适合度的增加等于适合度的加性遗传方差,说明自然选择是群体适合度增加的来源。這個定理雖然使用了數學來描述,但是它與數學中的定理意義不同。 (zh)
  • Fisher's fundamental theorem of natural selection is an idea about genetic variance in population genetics developed by the statistician and evolutionary biologist Ronald Fisher. The proper way of applying the abstract mathematics of the theorem to actual biology has been a matter of some debate. It states: "The rate of increase in fitness of any organism at any time is equal to its genetic variance in fitness at that time." Or in more modern terminology: (en)
  • El Teorema fundamental de la selección natural (Fisher's fundamental theorem of natural selection en inglés) es una idea en la genética de las poblaciones, desarrollada por Ronald Fisher, el estadista y biólogo evolutivo. Usa algunas notaciones matemáticas pero no es un teorema en el sentido de la matemática. Dice: «El índice del incremento de una aptitud de cualquier organismo en cualquier momento es igual a su varianza en aptitud en aquel momento.»​ O, en terminología más moderna: (es)
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  • Das Fundamentale Theorem der natürlichen Selektion formuliert mathematische Gesetzmäßigkeiten der Populationsgenetik für die Zunahme der Fitness von Organismen. (de)
  • Fisher's fundamental theorem of natural selection is an idea about genetic variance in population genetics developed by the statistician and evolutionary biologist Ronald Fisher. The proper way of applying the abstract mathematics of the theorem to actual biology has been a matter of some debate. It states: "The rate of increase in fitness of any organism at any time is equal to its genetic variance in fitness at that time." Or in more modern terminology: "The rate of increase in the mean fitness of any organism, at any time, that is ascribable to natural selection acting through changes in gene frequencies, is exactly equal to its genetic variance in fitness at that time". (en)
  • El Teorema fundamental de la selección natural (Fisher's fundamental theorem of natural selection en inglés) es una idea en la genética de las poblaciones, desarrollada por Ronald Fisher, el estadista y biólogo evolutivo. Usa algunas notaciones matemáticas pero no es un teorema en el sentido de la matemática. Dice: «El índice del incremento de una aptitud de cualquier organismo en cualquier momento es igual a su varianza en aptitud en aquel momento.»​ O, en terminología más moderna: «El índice del incremento en la aptitud mediana de cualquier organismo en cualquier momento atribuible a la selección natural actúa por cambios en la frecuencia genética y es exactamente igual a su varianza genética en la aptitud en aquel tiempo».​ (es)
  • Il teorema fondamentale della selezione naturale è un teorema proposto nel 1930 da Ronald Fisher che afferma che in presenza di selezione naturale la fitness media di una popolazione tende ad aumentare. (it)
  • 费雪自然选择基本定理(英語:Fisher's fundamental theorem of natural selection),由羅納德·費雪爵士在1933年首次提出,是现代进化论中关于自然选择的一个基本定理,该定理显示平均适合度的增加等于适合度的加性遗传方差,说明自然选择是群体适合度增加的来源。這個定理雖然使用了數學來描述,但是它與數學中的定理意義不同。 (zh)
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