Biology Biotechnology Principles and Processes Bioreactors and Downstream Processing Single Correct MCQ
Published on: August 13, 2026

Which of the following is a desirable characteristic for a cloning plasmid?

A
a site at which replication can be initiated
B
one or more unique restriction endonuclease sites
C
one or more antibiotic- resistance or drug resistance genes
D
all of the above

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Text Solution

Verified by Experts
The correct answer is:
D

A good cloning plasmid should have:

• Origin of replication (ori) for replication in the host.

• Unique restriction sites for insertion of foreign DNA.

• Selectable marker genes (e.g., antibiotic resistance) to identify transformed cells.

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