Question

Polymerases are also available from other Thermus species. Which of the following is correct?

(a) Thermus flavus gives Tfl enzyme

(b) Thermus thermopilus gives Tfl enzyme

(c) They are having proof reading activity

(d) Thermus flavus gives Tth enzyme

I have been asked this question in my homework.

My doubt is from The Basic Technique in division Polymerase Chain Reaction of Genetic Engineering

Answer 1

Correct answer is (a) Thermus flavus gives Tfl enzyme

The best explanation: Other Thermus species also provide polymerases. Thermus flavus gives Tfl enzyme and Thermus thermopilus gives Tth enzyme. They are also 3’-5’ proof-reading activity.