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Directional selection can be distinguished from disruptive selection by _______. a. the elimination of extreme variations of traits b. selection for two extreme variations of a trait c. the preservation of gene frequencies d. selection for one extreme variation of a trait With regards to a “Data (Age) Structure Diagram”, which of the following is an indicator of a rapidly growing population? a. a large elderly population b. a large middle age population c. a large teenage population d. a large child population

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