The RNA Molecules of an RNA World on Early Earth

Multiple Choice

The RNA molecules of an RNA world on early Earth may have been composed of bases other than A, U, G, and C because ____.

A) DNA does not use all four bases
B) these nucleotides will not form a double helix
C) these nucleotides cannot be created in a Miller-Urey like experiment
D) G is somewhat unstable in water
E) C is somewhat unstable in water