Question: Which of the following takes place when tryptophan levels are high?

Options

A : Attenuation at the attenuator structure formed by sequences of 3 and 4

B : Ribosomes pauses at the Try codons in sequence 1

C : Formation of paired structure between 2 and 3 sequences prevents attenuation

D : 2:3 structures, unlike the 3:4 attenuator, does not prevent transcription

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