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9.Biotechnology Principals and Process
medium
Do eukaryotic cells have restriction endonucleases? Justify your answer.
Option A
Option B
Option C
Option D
Solution
No, eukaryotic cells do not have restriction endonuclease because $DNA$ molecules of eukaryotes are heavily methylated by an enzyme methylase. Methylation protects the $DNA$ from the activity of restriction enzymes. All the restriction endonucleases have been isolated from various strains of bacteria or prokaryotic cells.
Standard 12
Biology