Life before RNA.

@article{Sowerby2002LifeBR,
  title={Life before RNA.},
  author={Stephen J. Sowerby and George B. Petersen},
  journal={Astrobiology},
  year={2002},
  volume={2 3},
  pages={231-9}
}
The hypothesis that life originated and evolved from linear informational molecules capable of facilitating their own catalytic replication is deeply entrenched. However, widespread acceptance of this paradigm seems oblivious to a lack of direct experimental support. Here, we outline the fundamental objections to the de novo appearance of linear, self-replicating polymers and examine an alternative hypothesis of template-directed coding of peptide catalysts by adsorbed purine bases. The bases… CONTINUE READING

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