I think the answer is A. not entirely sure
The Phleom does that action. Hope this helped! :)
Answer:
RNA polymerase creates mRNA when it is is in the starter called Positive transcription factor 5. What does the “mRNA destroyer” do? It destroys the mRNA when there is enough mRna 6. ... Negative transcription doesn't allow mRNA to produce more 7.
Explanation:
The answer is 2) 12 '''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''