Home Biology Biotechnology Principles and Processes Previous Year Questions First discovered restriction endonuclease th…
Biology Biotechnology Principles and Processes Previous Year Questions Single Correct MCQ
Published on: August 12, 2026

First discovered restriction endonuclease that always cuts DNA molecule at a particular point by recognising a specific sequence of six base pairs is:

A
EcoR1
B
Adenosine deaminase
C
Thermostable DNA polymerase
D
Hind II

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The correct answer is:
D

Hind II was the first restriction endonuclease discovered. It recognizes a specific DNA sequence and cuts at a particular site, making it the first enzyme used for precise DNA cutting.

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