RNA-based systems EVOLUTION OF RNAS THAT CAN DIRECT PROTEIN SYNTHESIS RNA and protein-based systems RNA EVOLUTION OF NEW ENZYMES THAT CREATE DNA AND MAKE RNA COPIES FROM IT DNA→RNA→ protein Question 7-7 Discuss the following During the evolution of life on earth, RNA has been demoted from its glorious posi- tion as the first self-replicating catalyst. Its role now is as a mere messenger in the information flow from DNA to protein.31