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  1. Which one of the following hydrolyses internal phosphodiester bonds in a polynucleotide chain?
    1. Lipase
    2. Protease
    3. Endonuclease
    4. Exonuclease
Correct Option: C

Endonucleases hydrolyse internal phosphodiester bonds in a polynucleotide chain (DNA). While exonucleases hydrolyse terminal phosphodiester bonds in a polynucleotide chain (DNA).


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