A Bacterium Inherits a Mutation That Renders Its Topoisomerase Enzyme

question 47

Multiple Choice

A bacterium inherits a mutation that renders its topoisomerase enzyme nonfunctional.What phenotype would you expect to see in this bacterium?

• A)The cell would accumulate broken DNA because overwinding cannot be corrected,so the cell will be unable to replicate and will die.
• B)The cell would accumulate supercoiled DNA,but otherwise it is perfectly normal.
• C)The cell would accumulate relaxed DNA,which would make DNA replication and cell division highly disorganized and lead to cell death.
• D)The cell would accumulate relaxed DNA,but otherwise it is perfectly normal.
• E)The cell would be unaffected because bacteria have many different topoisomerases that are involved in replication.

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Definitions:

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The error made in statistical hypothesis testing when a true null hypothesis is incorrectly rejected.

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