問題詳情
73. A partial diploid E. coli with which of the following genotypes would turn blue on the plate containing X-Gal in thepresence or absence of the inducer IPTG?
(A) I+O+lacZ+/ I+O+lacZ-
(B) IO+lacZ+ / I+O+lacZ-
(C) I+OclacZ- / I+O+lacZ+
(D) I+OclacZ+/ I+O+lacZ+
(E) I+OclacZ-/ IO+lacZ+
參考答案
答案：D
難度：非常困難0.166667
統計：A(0),B(1),C(4),D(2),E(2)