The formation of 1+2 and 3+4 secondary structures of 5' UTR region mRNA from the trp operon is triggered when:
A) the tryptophan level inside the bacterial cell is extremely low.
B) the tryptophan level inside the bacterial cell is high.
C) the repressor protein fails to bind to the operator.
D) there is a spontaneous mutation introduced into the 5' UTR.
E) the structural gene transcription within the trp operon gets initiated.

Question

Quizplus · Accepted Answer

The formation of 1+2 and 3+4 secondary structures in the trp operon mRNA occurs when tryptophan levels are high, leading to attenuation and termination of transcription.

The Formation of 1+2 and 3+4 Secondary Structures of 5