Question

E.cor1 is a __________

(a) DNA ligase enzyme

(b) Restriction endonuclease

(c) A vector used for insulin synthesis

(d) A plasmid used as a vector

This question was addressed to me at a job interview.

I need to ask this question from DNA Cloning: The Basics-1 topic in chapter DNA-Based Information Technologies of Biochemistry

Answer 1

Right answer is (b) Restriction endonuclease

For explanation: Ecor1 is a restriction enzyme that cleaves vector at the cloning site.