Question

Plasmids are suitable vectors for gene cloning because these ______.

Options

• Are small circular DNA molecules which can integrate with host chromosomal DNA

• Are small circular DNA molecules with their own replication origin site.

• Can shuttle between prokaryotic and eukaryotic cells

• Often carry antibiotic resistance genes

Answer 1

Plasmids are suitable vectors for gene cloning because these are small circular DNA molecules with their own replication origin site.

Explanation:

Plasmids are self-replicating. These have a signal at their replication origin that indicates how many copies should be created, and this number can be artificially raised for cloning a specific gene.