Researchers Found E

question 7

Multiple Choice

Researchers found E. coli that had mutation rates 100 times higher than normal. Which of the following is the most likely cause of these results?

• A) The single-stranded binding proteins were malfunctioning.
• B) There were one or more mismatches in the RNA primer.
• C) The proofreading mechanism of DNA polymerase was not working properly.
• D) The DNA polymerase was unable to add bases to the 3' end of the growing nucleic acid chain.

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