Q. Which one is regarded as a molecular scissor in biotechnology?
A) Reverse transcriptase
B) Restriction endonuclease
C) Taq polymerase
D) Topoisomerase
Explanation
Restriction enzymes are the enzymes that can cleave or cut a DNA molecule within certain specific sites that have specific base sequence. These are used in recombinant DNA technology to produce cuts in vector and other DNA molecules to obtain chimeric DNA. Hence, these are also known as molecular scissors.
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.