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. 1992 Dec;42(3):333-46.
doi: 10.1016/0040-5809(92)90019-p.

An optimizing principle of natural selection in evolutionary population genetics

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An optimizing principle of natural selection in evolutionary population genetics

W J Ewens. Theor Popul Biol. 1992 Dec.

Abstract

This paper brings together two themes in evolutionary population genetics theory. The first concerns Fisher's Fundamental Theorem of Natural Selection: a recent interpretation of this theorem claims that it is an exact result, relating to the so-called "partial" increase in mean fitness. The second theme concerns the desire to find an optimality principle in genetic evolution. Such a principle is found here: of all gene frequency changes which lead to the same partial increase in mean fitness as the natural selection gene frequency changes, the natural selection values minimize a generalized distance measure between parent and daughter generation gene frequency values.

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