The biological scissors are :
i. Restriction enzymes are used to cut DNA into nucleotide monomers.
ii. Enzymes belong to hydrolases
iii. Enzymes that can identify specific base sequences that vary from enzyme to enzyme and cut the DNA between specific nucleotides of the sequence.
Select the option with the correct statement/s

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i and ii

i and iii

i, ii and iii

ii and iii

answer is B.

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Detailed Solution

The cutting of DNA at specific locations became possible with the discovery of the so-called ‘molecular scissors’– restriction enzymes. Each restriction endonuclease recognises a specific palindromic nucleotide sequences in the DNA and cut the DNA between specific nucleotides of the sequence by hydrolysis.

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