Molecular Clocks Are Based On The Idea That _____

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Molecular Clocks Are Based On The Idea That _____

. (Concept 26.5) A) Molecules resonate at a certain frequency that can be measured. B) Advantageous mutations arise at a constant rate. C) Directional selection occurs at a constant rate. D) Mutations occur once every generation. E) On average neutral mutations arise at a constant rate.
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E) On average neutral mutations arise at a constant rate (The idea of a molecular clock rests on the assumption that neutral mutations can arise and become fixed in populations. The rate of occurrence of these mutations is not affected by natural selection, so it is assumed that the rate is relatively constant over time.)
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