Answer: DNA ligase.
- A DNA ligase
- B the DNA polymerase
- C only a helicase
- D a restriction one
Correct answer: A. DNA ligase
Explanation: DNA ligase seals fragments by forming phosphodiester bonds.
Recombinant DNA technology: a gene of interest and plasmid are cut by the same restriction enzyme, ligated into a recombinant plasmid, and introduced into a host cell.
Concept context
Recombinant DNA, GMOs, PCR, CRISPR, and biotechnology applications. Growing importance in NEET.
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