What Would Be the Most Likely Result on the Regulation

question 22

Multiple Choice

What would be the most likely result on the regulation of the lac operon from a nonfunctional repressor protein?

• A) transcription of the lactose metabolizing genes, even when lactose is absent
• B) no transcription of the lactose metabolizing genes, even when lactose is present
• C) binding of the repressor protein to the operator, even when lactose is present
• D) binding of the repressor protein to the regulatory gene in both the presence and absence of lactose
• E) no transcription of the regulatory gene, even in the presence of lactose

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