Scientists have used cryo-electron microscopy to visualize the recoding of the UGA stop codon to incorporate selenocysteine in mammals.

The Science of Aliens, Part 2: What Kind of Genetic Code Would Extraterrestrials Have? Alien life would likely have different biochemistry, which may change the way it reproduces.

Biochemistry is a field of study where biology and chemistry overlap. Biochemists study living things in the same way biologists would, but their attention is focused on the molecular level. The ...