Researchers Found a Strain of E

question 51

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 results?

• A) The single-strand binding proteins were malfunctioning during DNA replication.
• B) There were one or more base pair 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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Definitions:

Complementary Resources

Resources used together in production that increase each other's effectiveness.

Fixed Proportions

A production condition where inputs must be combined in strict, unchanging ratios to produce output.

Substitution Effect

The change in the quantity demanded of a good resulting from a change in its price, making it more or less expensive relative to other goods.

Output Effect

The change in total output resulting from a change in the quantity of an input, other factors being held constant.