Restriction Endonucleases

question 19

Multiple Choice

Restriction endonucleases

• A) cleave single stranded DNA preferentially.
• B) cleave DNA at specific sequences only when those sequences are unmethylated.
• C) remove bases one at a time from the 5' end of the DNA only when the bases are incorrectly matched with the template strand.
• D) initiate the repair process by making a single endonucleolytic incision at the 5' end of the damaged DNA region.
• E) are required for the correct processing of tRNA in the cell.

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Definitions:

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