CLONING VECTOR : Cont....

A cloning vector is a small piece of DNA that can be used to carry a foreign DNA fragment into another cell for cloning purposes. The purpose of a cloning vector is to isolate, multiply, or express the foreign DNA in the target cell.
Here are some things to know about cloning vectors:
Types
Cloning vectors can be plasmids, viral vectors, cosmids, or artificial chromosomes. Plasmids are the most commonly used type of cloning vector.
Features
Cloning vectors have features that make it easy to insert and remove DNA fragments, such as restriction sites. They also have an origin of replication, a multicloning site, and a selectable marker.
How it works
A cloning vector is treated with a restriction enzyme to cut the DNA, creating fragments with blunt ends or sticky ends. The vector DNA and foreign DNA with compatible ends can then be joined by molecular ligation.