Figure 2.

A: challenges of a primordial ribozyme. This cartoon represents a plethora of problems that the primordial ribozyme needed to solve for maintaining exponential growth, without compromising on the Eigen’s error threshold. We discuss each of these and the possible pathways by which the RNA navigated the environment of an early earth. B: this cartoon, adapted from “Autocatalytic chemical networks preceded proteins and RNA in evolution” [32] represents a rudimentary Reflexively Autocatalytic Food-generated network and their interdependence in maintaining the network.