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10 August, 10:32

Question 5 unsaved fossil records show that the size of black bears in europe increased during each glacial period and decreased during the interglacial periods. identify the type of selection that occurred during each period and discuss how the type of selection supports the claim that a single environmental factor can yield a variety of phenotypic responses from different genotypes within a population.

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  1. 10 August, 10:47
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    Directional selection-shifts the Phenotypic "curve" of a population. Selects in favor of some extreme phenotype. Ex : fossil records show that the size of black bears in Europe increased during each glacial period and decreased during the Interglacial periods.
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