複選題
11. Which of the following genetic backgrounds can be induced by lactose to produce beta-galactosidase?
(A) I+Z+Y+A+
(B) I-Z+Y+A+
(C)I+Z-Y+A+
(D)I-Z-Y+A+
(E)All of them
答案:登入後查看
統計: A(0), B(0), C(1), D(0), E(0) #3262597
統計: A(0), B(0), C(1), D(0), E(0) #3262597