Restriction Endonucleases

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.