Cloning vectors can be distinguished from expression vectors by
A) carrying ori genes for replication of the cloned sequence.
B) having a multiple cloning site (MCS).
C) having a high copy number per cell.
D) lacking a promoter site upstream of the insertion site.

Question

Quizplus · Accepted Answer

Cloning vectors typically lack a promoter site upstream of the insertion site, while expression vectors have a strong promoter for efficient expression of the cloned gene. The other options - carrying ori genes, having an MCS, and having a high copy number per cell - are common features shared by both cloning and expression vectors.

Cloning Vectors Can Be Distinguished from Expression Vectors by