試題詳解

37. Which of the following is/are FALSE about the E. coli Lac operon?
(A) Transcription produces a single polycistronic mRNA containing the lacZ, lacY, and lacA genes.
(B) The lacl gene is controlled from the same promoter as the lacZ gene.
(C) The Lac repressor protein is constitutively expressed.
(D) The operator region regulates transcription through interaction with the Lac repressor protein.
(E) The amount of glucose in the growth medium does not affect the level of gene expression activated by lactose.