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Endonucleases break DNA at specific site...

Endonucleases break DNA at specific sites called

A

Palindromic sequences

B

Restriction sites

C

Conserved sites

D

Both A and B

Text Solution

Verified by Experts

The correct Answer is:
D
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Restriction endonuclease was isolated for the first time by W. Aber in 1962 in bacteria. Restriction endonucleases cut the DNA duplex at specific points therefore they are also called as molecular scissors or biological scissors. Three types of restriction endemicleases are Type 1. Type II and Type III but only Type II restriction endonucleases are used in recombinant DNA technology. Restriction endonuclease EcoR I recognises the base sequence GAATTC In DNA duplex and cut strands between G and A. Restriction endonuclease was isolated for the first time from a:

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