When the workings of the genome were first being discovered, the central evolutionary dogma of molecular biology claimed that genetic information passes consistently from DNA to RNA to proteins. Today we know that RNA messages can be altered by a variety of mechanisms. New studies in genetics on one of these processes, RNA editing, have revealed an unprecedented level of dynamically adaptive genome complexity that defies the conventional evolutionary paradigm.¹ Marbled jellyfish   All major animal groups from jellyfish to humans use amazing cellular machinery...