Question

Attenuator sequences base-pair to form a stem-and-loop structure rich in ____________

(a) A = T

(b) G ≡ C

(c) A = C

(d) G = C

The question was asked in exam.

This key question is from Regulation of Gene Expression in Prokaryotes topic in section Regulation of Gene Expression and Miscellaneous of Biochemistry

Answer 1

Right choice is (b) G ≡ C

The explanation: Attenuator sequences base-pair to form a G≡C rich stem-and-loop structure closely followed by a series of U residues.