Attenuation of the Trp Operon Fails to Occur When

question 23

Multiple Choice

Attenuation of the trp operon fails to occur when

• A)a lack of tryptophan causes stalling of ribosomes on the leader sequence of the RNA.
• B)an RNA stem-loop forms that allows transcription to continue.
• C)an RNA stem-loop that causes transcription to terminate fails to form.
• D)the cell has enough tryptophan.
• E)the operator is mutated.

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