試題詳解

複選題
18.Regarding to the techniques used in molecular cloning and gene expression, which statements is/are CORRECT?
(A) Restriction endonucleases that recognize and cut DNA at specific sequences are often used in molecular cloning.
(B) Plasmids with low copy numbers are often used as cloning vectors.
(C) Expression vectors contain promoters that allow transcription of the cloned gene.
(D) Cloned DNA can be introduced into E. coli by transformation.
(E) CRISPR-Cas system is a gene editing technique.