normalizing selection


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normalizing selection

a form of STABILIZING SELECTION in which less fit individuals at both extremes of a distribution are eliminated, reducing the genetic variability in the population.
References in periodicals archive ?
The theory predicts that there will be normalizing selection on the pattern because prey individuals gain maximum protection by closely resembling members of their species previously encountered by predators.
Where similarity exists within species, this would have to be accounted for by normalizing selection generated by the pattern's other function, such as sexual selection.
In particular the conventional signalling theory can account for the way that conspicuousness is known to promote warning signal efficacy, the occurrence of normalizing selection on warning pattern elements both within unpalatable species and between Miillerian mimics, and the existence of Batesian mimics with color patterns convergent on their models.