Thank you for reporting, we will resolve it shortly
Q.
Which of the following is a plasmid?
KEAMKEAM 2010Biotechnology : Principles and Processes
Solution:
Plasmid vectors are extra-chromosomal, selfreplicating, usually circular, double-stranded DNA molecules, found naturally in many bacteria and also in some yeast. pBR322 vector was the first artificial cloning vector constructed in 1977 by Boliver and Rodriguez. It is widely used in gene cloning experiments.