Assume that in the organism under study the DNA polymerase has an error rate of 1 mistake in every 10⁶ bases copied.However, the overall mutation rate is much lower.This is most likely because A)the polymerase is more careful in replicating regions where genes exist B)repair mechanisms correct errors made by the polymerase. C)not all mutations can be detected easily. D)the DNA polymerase has no proofreading function E)mutations do not occur if mutagens are not present

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The overall mutation rate is lower because the repair mechanisms correct errors made by the DNA polymerase. Even though the DNA polymerase has an error rate of 1 mistake in every 10⁶ bases copied, the repair mechanisms can detect and fix these mistakes before they become permanent mutations.

Assume That in the Organism Under Study the DNA Polymerase