Question

Which of these is a true statement?

Options

• Vectors carry only the foreign gene into the host cell.

• Plasmids can carry recombinant DNA but viruses cannot.

• Both plasmids and viruses can serve as vectors.

• All of the above statements are correct.

Answer 1

Both plasmids and viruses can serve as vectors.

Explanation:

Plasmids (circular DNA found in bacteria) and viruses can be utilised as vectors in recombinant DNA technology to transport foreign genes into host cells. While plasmids are widely utilised in bacteria, viral vectors are especially useful for gene transfer in eukaryotic cells.