10.3 Repressor is controlled by a small molecule inducer Add inducer Remove inducer Level of fac mRNA Induced level Figure 10.6 Addition of Basal level Basal level inducer results in rapid 6 nin induction of lac mRNA, and is followed after a Level of B-galactosidase short lag by synthesis of ag the enzymes; removal of Induced level inducer is followed by rapid cessation of synthesis 请莘大 Basal levelFigure 10.6 Addition of inducer results in rapid induction of lac mRNA, and is followed after a short lag by synthesis of the enzymes; removal of inducer is followed by rapid cessation of synthesis. 10.3 Repressor is controlled by a small molecule inducer