Some viruses thwart bacterial defenses with a unique genetic alphabet

DNA has four building blocks: A, C, T and G. But some bacteriophages swap A for Z, and scientists have figured out how and why they do it.

May 5, 2021 - Science News
DNA has four building blocks: A, C, T and G. But some bacteriophages swap A for Z, and scientists have figured out how and why they do it.