Which of the following takes place when tryptophan levels are high?(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 transcriptionThis question was addressed to me by my school principal while I was bunking the class.Query is from Regulation of Gene Expression in Prokaryotes topic in section Regulation of Gene Expression and Miscellaneous of Biochemistry

Which of the following takes place when tryptophan levels are high?(a)

1.	Which of the following takes place when tryptophan levels are high?(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 transcriptionThis question was addressed to me by my school principal while I was bunking the class.Query is from Regulation of Gene Expression in Prokaryotes topic in section Regulation of Gene Expression and Miscellaneous of Biochemistry
Answer» Correct option is (a) Attenuation at the attenuator structure FORMED by SEQUENCES of 3 and 4 The best explanation: b, c and d take PLACE when tryptophan levels are low.

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