The genetic code is the recipe for life, and provides the instructions for how to make proteins, generally using just 20 amino acids. But certain groups of microbes have an expanded genetic code, in ...

Researchers in Spain have cracked the genetic code of the immortal jellyfish, so-called because it can repeatedly rejuvenate itself – a feat scientists hope can lead to advances in how to treat human ...

The same amino acid can be encoded by anywhere from one to six different strings of letters in the genetic code. Andrzej Wojcicki/Science Photo Library via Getty Images Nearly all life, from bacteria ...