問題詳情

42. How does the RecA protein contribute to the increased expression of SOS genes?
(A) RecA protein competes with LexA protein for binding to the operator sequences.
(B) RecA protein binds to LexA protein bound to the operator, directly lowering the affinity of LexAprotein for DNA.
(C) RecA protein binds to free LexA protein, mediating the self-cleavage of the repressor.
(D) RecA protein binding to the promoter region recruits RNA polymerase.

參考答案

答案：[無官方正解]
難度：計算中-1
書單：沒有書單，新增