The "natural" function of restriction endonucleases is to
A) protect bacterial cells from invasion by viruses (bacteriophages).
B) help bacteriophages infect cells.
C) regulate gene expression from specific promoters.
D) remove chromatin from histones.

Question

Quizplus · Accepted Answer

Restriction endonucleases serve as a defense mechanism for bacteria, protecting them from bacteriophage infections by cutting the DNA of invading viruses.

The "Natural" Function of Restriction Endonucleases Is to