With Regard to RNA Polymerase Proofreading Ability,which of the Following

question 55

Multiple Choice

With regard to RNA polymerase proofreading ability,which of the following is correct?

• A)It is a very stringent activity, no tolerance for mistakes.
• B)It is similar to that of DNA polymerases.
• C)There are specialized mRNA repair pathways that fix errors.
• D)There is absolutely no proofreading that needs to be done.
• E)The 3' → 5' exonuclease activity is sufficient.

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