Restriction endonucleases in bacteria may have evolved in order to
A. carry out natural genetic engineering.
B. protect the bacteria from infection by viruses.
C. use nucleic acids as a food (energy) source.
D. all of the choices
Answer: B
Restriction endonucleases in bacteria may have evolved in order to
A. carry out natural genetic engineering.
B. protect the bacteria from infection by viruses.
C. use nucleic acids as a food (energy) source.
D. all of the choices
Answer: B