What is the origin and physiological function of restriction endonucleases?
A)Bacteriophage produce them to gain resistance to antibiotics.
B)Restriction endonucleases are required for DNA replication in yeast.
C)Bacteria produce them to protect against viral invasion.
D)Scientists invented them and synthesize them in labs.

Question

Quizplus · Accepted Answer

Restriction endonucleases are enzymes produced by bacteria as a defense mechanism against bacteriophages (viruses that infect bacteria). They recognize specific DNA sequences and cut the DNA at or near these sequences, thereby restricting the ability of the virus to infect and replicate within the bacterial cell.

What Is the Origin and Physiological Function of Restriction Endonucleases