Question

Which is the most commonly used enzyme for polymerase chain reaction?

• A. DNA polymerase II
• B. Reverse transcriptase
• C. Klenow fragment
• D. Taq polymerase

Answer 1

The correct option is D Taq polymerase

• Taq polymerase is a thermostable DNA polymerase that is used in the polymerase chain reaction.
• It was named after the thermophilic bacterium Thermus aquaticus from which it was isolated by Thomas D. Brock in 1965.
• The polymerase enzyme is stable at a high range of temperature.

Thus, the correct answer is option D.