First slide

Tools of Recombinant DNA Technology

Question

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

Easy

A

Hind II
B

EcoR I
C

Adenosine deaminase
D

Thermostable DNA polymerase

Solution

The first discovered restriction endonuclease is Hind II. It was found that Hind II always cut DNA molecules at a particular point by recognising a specific sequence of six base pairs. This specific base sequence is known as the recognition sequence for Hind II.
EcoRI is obtained from Escherichia coli RY 13.
Taq polymerase is a thermostable DNA polymerase used in PCR.
ADA enzyme is crucial for the immune system to function. In SCID, there is deficiency of ADA enzyme.

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