Question

The linking of antibiotic resistancе gene with the plasmid vector became possible with ______.

Options

• DNA polymerase

• exonuclease

• DNA ligase

• endonucleases

Answer 1

The linking of antibiotic resistancе gene with the plasmid vector became possible with DNA ligase.

Explanation:

DNA ligase joins the antibiotic-resistance gene to the plasmid vector. Endonucleases cut DNA, while DNA polymerase copies it.