Some bacteria have been found to have much higher rates of mutation than other members of their population; they are termed "mutators." What do you think is the most likely reason for their higher rates of mutation?
A. They are incapable of bacterial transformation.
B. Their DNA polymerase has compromised 5' to 3' polymerase function.
C. All choices are equally likely to lead to higher rates of mutation.
D. They have much smaller genomes than regular bacteria.
E. Their DNA polymerase has compromised 3' to 5' exonuclease function.
Answer: E
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