Small circular pieces of bacterial DNA that are used as vectors in cloning experiments are called ________.
A) phages
B) viruses
C) plasmids
D) chromosomes

Question

Quizplus · Accepted Answer

Plasmids are small circular pieces of bacterial DNA that can replicate independently from the chromosomal DNA of the host bacterium. They can be genetically modified to carry foreign genes and used as vectors in cloning experiments. Phages and viruses can also be used as vectors in cloning experiments, but they are not small circular pieces of bacterial DNA. Chromosomes are not used as vectors in cloning experiments.

Small Circular Pieces of Bacterial DNA That Are Used as Vectors