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Q. Which of the following is not correct statement about the plasmids ?

Odisha JEEOdisha JEE 2011Biotechnology : Principles and Processes

Solution:

In addition to the single large circular chromosome, each bacterial cell contains from 1 to 20 much smaller circular duplex DNA molecules which are called as plasmids. Plasmids replicate along with the bacterial chromosome. Their function varies. Some of them become incorporated into the host cell chromosome and are called episomes. These are sometimes transferred from one bacterial cell to another during conjugation.