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What are molecular scissors ? Explain th...

What are molecular scissors ? Explain their role .

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The nuclear enzymes that break DNA at specific sites are called restriction endoncleases [REN]. The RENs are popularly known as Biomolecular scissors. REN may cut both the strands of a DNA at the same position or at different positions.
e.g.:- Eco RI, Hind III, SalI, Bam l.
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