Multiple choice botany option b: biotechnology and bioinformatics biotechnology in agriculture gm crops transgenic organisms Which one is a cloning plasmid and not an expression plasmid? pBAD-18-Cam pBCSK pUC 18 pET Reveal answer Fill a bubble to check yourself C Correct answer Explanation pUC 18 is a classic cloning vector designed for cloning DNA fragments. pET and pBAD are expression vectors designed to drive the expression of the cloned gene.