How Does the Inducer Change the Repressor's Affinity for DNA

question 3

Multiple Choice

How does the inducer change the repressor's affinity for DNA?

• A)Inducer binding changes the repressor's shape so that the promoter is bent from a rectangular to a loop-like shape.
• B)Inducer binding changes the repressor's shape to alter the positioning of the repressor's DNA-binding domains so they no longer interact with DNA.
• C)Inducer binding makes the repressor's DNA-binding domains more positively charged,so they can no longer bind the operator.
• D)Inducer binding makes the repressor's DNA-binding domains more negatively charged,so they can no longer bind the operator.

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