The Effect of Selection on the Phenotypic Variance ...
E. E. Shnol and A. S. Kondrashov Institute of Mathematical Problems of Biology, Pushchino, Moscow Region, 142292, Russia We consider the within-generation changes of phenotypic variance caused by selection w(x) which acts on a quantitative trait x. If before selection the trait has Gaussian distribution, its variance decreases if the second derivative of the logarithm of w(x) is negative for ...
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