Question

An extra chromosomal segment of circular DNA of a bacterium is used to carry gene of interest into the host cell. What is the name given to it?

Answer 1

Plasmid is the name given to it.

1. Plasmid is an extra chromosomal DNA molecule found in bacteria and some eukaryotes. They hold ability to replicate independently.
2. Plasmid are used as vector.
3. Vector in molecular biology refers to DNA molecule that carries foreign or specifically required genetic material into another cell.
4. In another cell, the genetic material is either replicated or expressed to provide required proteins.