試題詳解

40. A principal problem with inserting an unmodified mammalian gene into a plasmid and then getting that gene expressed in bacteria is that
(A) bacteria cannot remove eukaryotic introns
(B) bacteria translate only mRNAs that have multiple messages
(C) prokaryotes use a different genetic code from that of eukaryotes
(D) bacterial RNA polymerase cannot make RNA complementary to mammalian DNA