The fundamental theorem of natural selection
نویسندگان
چکیده
منابع مشابه
The fundamental theorem of natural selection.
R. A. Fisher's Fundamental Theorem of Natural Selection states that the rate of increase in the mean fitness of a population ascribable to gene-frequency changes is exactly equal to the additive genetic variance in fitness. It has been widely misunderstood, though clarification has gradually come about particularly through the work of G. R. Price, W. J. Ewens, and S. Lessard. Building on their ...
متن کاملFisher's fundamental theorem of natural selection revisited.
W. J. Ewens, following G. R. Price, has stressed that Fisher's fundamental theorem of natural selection about the increase in mean fitness is of general validity without any restrictive assumptions on the mating system, the fitness parameters, or the numbers of loci and alleles involved, but that it concerns only a partial change in mean fitness. This partial change is obtained by replacing the...
متن کاملFisher's fundamental theorem of natural selection.
Fisher's Fundamental Theorem of natural selection is one of the most widely cited theories in evolutionary biology. Yet it has been argued that the standard interpretation of the theorem is very different from what Fisher meant to say. What Fisher really meant can be illustrated by looking in a new way at a recent model for the evolution of clutch size. Why Fisher was misunderstood depends, in ...
متن کاملThe Fundamental Theorem of Natural Selection in Ewens' sense (case of fertility selection).
We show that the Fundamental Theorem of Natural Selection in Ewens' sense is valid in the case of fertility selection: the additive genetic variance in fertility divided by the mean fertility is exactly equal to the partial change in the mean fertility from the current generation to the next. This partial change is the increase in the mean additive value caused by frequency changes from on gene...
متن کاملFundamental theorem of natural selection and frequency-dependent selection: analysis of the matrix game diploid model.
Following Ewens' interpretation about Fisher's fundamental theorem of natural selection, the matrix game model for diploid populations undergoing non-overlapping, discrete generations is investigated. The total genetic variance is decomposed and it is shown that the partial change in the mean fitness, which is equal to the additive genetic variance over the mean fitness, can be thought of as a ...
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ژورنال
عنوان ژورنال: Journal of Animal Breeding and Genetics
سال: 2018
ISSN: 0931-2668
DOI: 10.1111/jbg.12361