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Multiple Choice
Researchers found a strain of E. coli bacteria that had mutation rates one hundred times higher than normal. Which of the following statements correctly describes the most likely cause of these mutations?
A
The single-stranded binding proteins were malfunctioning during DNA replication.
B
There were one or more mutations in the RNA primer.
C
The proofreading mechanism of DNA polymerase was malfunctioning.
D
The DNA polymerase was unable to add bases to the 3′ end of the growing DNA strand.
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