Cloning Vectors

• The vectors are the DNA molecules that can carry a foreign DNA segment into the host cell.
• Vectors may be:

1. Plasmids: These are autonomously replicating circular extra – chromosomal DNA.
2. Bacteriophages:These are viruses infecting bacteria.

• The best known vector is the plasmid vector.
• The following features are required to facilitate cloning into a vector.