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Biology · Principles and Processes in Biotechnology
हिन्दीGiven below are two statements: Statement I: Exonucleases make internal cuts within a DNA strand at specific palindromic sequences. Statement II: Restriction endonucleases add methyl groups to host DNA to protect it from degradation. In the light of the above statements, choose the most appropriate answer from the options given below:
Correct answer · Option 2
Both Statement I and Statement II are incorrect.
Explanation
Statement I is false because endonucleases make internal cuts, while exonucleases remove nucleotides from ends. Statement II incorrectly attributes methylation to restriction endonucleases (modification methylases do that).
