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Question
Restriction enzymes present in micro-organisms do not cut their own DNA because of the presence of the
Restriction enzymes present in micro-organisms do not cut their own DNA because of the presence of the
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Solution
The correct option is A methyl
The restriction enzymes act on certain sites only. These sites are present on the cellular DNA as well. However, cellular enzymes chemically modify these recognition sites by adding methyl group making it unrecognizable to the restriction enzyme. The enzymes are still free to attack and cut unrestricted recognition sites.
The restriction enzymes act on certain sites only. These sites are present on the cellular DNA as well. However, cellular enzymes chemically modify these recognition sites by adding methyl group making it unrecognizable to the restriction enzyme. The enzymes are still free to attack and cut unrestricted recognition sites.
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