NEET Zoology Biotechnology Principles and Processes Questions Solved


What is EcoRI ? How does EcoRI differ from an exonuclease ?             (2 marks)

EcoRI is a restriction endonuclease enzyme. It cuts the DNA between bases G and A only when the sequence GAATTC is present in the DNA.

Exonuclease enzymes remove nucleotides from the ends of the DNA.

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