During factor-independent termination, RNA polymerase pauses upon encountering a _____________ and is then displaced downstream upon encountering a ___________.
A)TATAAT sequence; G-C rich segment
B)G-C rich segment; TATAAT sequence
C)G-C rich segment; string of 4-8 A residues
D)string of 4-8 A residues; TATAAT sequence
E)string of 4-8 A residues; G-C rich segment

Question

Quizplus · Accepted Answer

During factor-independent termination, RNA polymerase pauses upon encountering a G-C rich segment due to its stable structure and is then displaced downstream upon encountering a string of 4-8 A residues, as the RNA-DNA hybrid formed is weak and allows the polymerase to disengage.

During Factor-Independent Termination, RNA Polymerase Pauses Upon Encountering a _____________