The CRISPR-Cas System in Bacteria is Most Similar to What

Question

The CRISPR-Cas system in bacteria is most similar to what system in vertebrates?
A) Immune system
B) Circulatory system
C) Nervous system
D) Digestive system

Accepted Answer

The CRISPR-Cas system in bacteria functions as an immune system, protecting the bacteria against invading viruses and plasmids. Similarly, the vertebrate immune system functions to protect the organism against foreign pathogens.