RNA World Hypothesis


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A conceptual era in Earth’s early evolution in which life began as biologically active, self-replicating molecules—catalytic RNA—that were later assisted by crude polypeptides See Primordial soup, Urkingdom
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The RNA world hypothesis is extremely unlikely," said Carter.
9) According to the RNA World Hypothesis, the first living system was a polymer(s) of catalytic RNA capable of self-replication that subsequently evolved the ability to encode more versatile peptide catalysts.
Among the most challenging questions for the RNA world hypothesis is, What would have been the source of the RNA nucleotides?