Zoology - Biotechnology - Principles and Processes Question with Solution | TestHub

Plasmids are extrachromosomal self-replicating DNA present in bacteria.  Plasmids are of different types on the basis of different types of genes present. The most common plasmid called R- plasmid carries the antibiotic-resistant gene and are commonly used as vector in genetic engineering to transfer gene of interest into host organism. Any plasmid becomes expressable when it contains a promoter region. Promoter acts as a regulatory region allowing for the expression of protein.