試題詳解

2. Which of the following descriptions about infection of E. coli by phage λ is     not correct    ?
(A) The cro gene is stimulated during the lytic cycle of λ infection.
(B) CII protects CIII against cellular proteases and thus is important for lytic cycle induction during λ infection.
(C) N is an antiterminator that permits RNA polymerase to ignore the terminators at the ends of the immediate early genes and continue transcribing into the delayed early genes.
(D) Q is an anti-terminator which permits transcription of the late genes during the lytic cycle of infection.
(E) λ repressor can stimulate its own synthesis by activating (a promoter for repressor maintenance).