- 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.
Concept context
Recombinant DNA, GMOs, PCR, CRISPR, and biotechnology applications. Growing importance in NEET.
Read the full Biotechnology: Principles and Processes notes →