stabilizing selection


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Related to stabilizing selection: Balancing selection
Stabilizing selectionclick for a larger image
Fig. 287 Stabilizing selection .

stabilizing selection

a type of SELECTION in which both extremes of a phenotypic range are selected against, producing a stable The mean represents the stable average phenotype.
References in periodicals archive ?
While feeding structures typically are subject to stabilizing selection, favoring optimal cost-effectiveness, structures used in antipredator defense are subject to directional selection, favoring maximum affordable effect (cf.
Alternatively, Paterson's recognition species concept (Paterson 1985) and Carson's organization theory of speciation (Carson 1985) suggest strong stabilizing selection on sexual characters within species.
We thus arrive at the surprising result that stabilizing selection moves the system to a point that is poised to become maximally unstable should it be subjected to decanalizing selection.
We explore how stabilizing selection on offspring alone can generate genetic integration through epistatic effects of traits on fitness.
The intensity of stabilizing selection should also be positively correlated to how frequently in nature the trait is expressed.
In addition to directional differences in means, dominant males were significantly less variable than were subordinate males in the individual pheromone compounds (Table 1) suggesting stabilizing selection on quantitative aspects of the male sex pheromone.
Such history-laden definitions make maintenance by stabilizing selection, the very subject of an optimality study, irrelevant by definition (Reeve and Sherman 1993).
However, significant stabilizing selection on total glucosinolate concentration occurred in the spray treatment (Table 1).
Not only can the local optima change, but the strength of stabilizing selection around these optima and their relative heights can change, causing transitions between peaks.
These traits appear to be under weak stabilizing selection, probably due to the pleiotropic effects of alleles on other traits (Nuzhdin et al.
Polygenic variation and stabilizing selection in a wild population of lesser snow geese (Anser caerulescens caerulescens).