What is the significance of adding proteases at the time of isolation of genetic material (DNA) ?

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asked Mar 13 in Class XII Biology by rahul152 (-2,871 points)
What is the significance of adding proteases at the time of isolation of genetic material (DNA) ?

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answered Mar 13 by nikita74 (-1,052 points)
Role of proteases is to degrade the proteins present inside a cell (from which DNA is being isolated). If the proteins are not removed from DNA preparation then they could interfere with any downstream treatment of DNA (such action of restriction endonuclease, DNA ligase etc).