A coding crescendo separates two early code eras. Three numbered definitions for divided early code evolution (see text) are interpreted as outcomes of c3-lCw. Initiation of code fusion (“fusions”), evolution of simple wobble (“Crick wobble”) and selection of the SGC (“selection”) are marked relative to the crescendo (Fig. 3A). Here, wobble evolves just before SGC selection; most simply, wobble existed in the nascent SGC. However, simple Crick wobble could have emerged later in the ribonucleopeptide era. The last common ancestor lies off to the right of Figure 6. The c3-lCw's approximate time before the present (upward arrow) reflects that of the most ancient fossil biota (see text).
