Vast numbers of different prokaryotic microorganisms shape the biosphere, with diverse metabolic capabilities. Determination of genome sequences for a wide range of bacteria and archaea now requires ...
Eukaryotic cells also contain a variety of structures and organelles not present in prokaryotic cells. Throughout the course of evolution, organelles such as mitochondria and chloroplasts (a form ...
Results reported in a recent Science paper provide the first experimental evidence to support the hypothesis that prokaryotes possess a defence system that might be analogous to eukaryotic RNA ...