If you made a change in the promoter sequence in the DNA that inactivates the promoter, what would happen at the RNA level?
A)Nothing, the RNA would be made as usual.
B)The mutation of the DNA would be carried through to the RNA sequence.
C)The RNA polymerase would not be able to recognize and bind the DNA, so no RNA would be made.
D)The DNA helicase would not be able to recognize and bind the DNA, so the RNA would not be made.

Question

Quizplus · Accepted Answer

If the promoter sequence is inactivated, RNA polymerase would not be able to recognize and bind the DNA, so transcription would not occur, and no RNA would be made. Option A is incorrect because a change in the promoter sequence would affect RNA synthesis. Option B is incorrect because mutations in the DNA sequence do not necessarily result in changes in the RNA sequence unless they are in coding regions. Option D is incorrect because DNA helicase is not involved in RNA synthesis.

If You Made a Change in the Promoter Sequence in the DNA