Biology Biotechnology Principles and Processes NCERT Single Correct MCQ
Published on: August 12, 2026

Cosmid is

A
extragenetic material in my coplasma
B
circular DNA in bacteria
C
extra DNA in bacteria
D
fragment of DNA inserted in bacteria for forming copies

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Verified by Experts
The correct answer is:
D

A cosmid is a hybrid cloning vector that contains:

Features of a plasmid

cos sites from bacteriophage λ

It is used to carry relatively large DNA fragments into bacteria, where the inserted DNA is replicated to produce many copies.

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