apostatic selection

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A type of selection which operates on a polymorphic species. Classically, the term is used in relation to prey species that have several different morphological forms. It occurs when, in proportion to their frequency in the population, rare forms of a species are preyed on less than common forms, thus conferring a selective advantage on them. Such selection may produce a stable genetic polymorphism.

Subjects: Ecology and Conservation — Zoology and Animal Sciences.

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