試題詳解

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