Darwinian evolution of an alternative genetic system provides support for TNA as an RNA progenitor.

  title={Darwinian evolution of an alternative genetic system provides support for TNA as an RNA progenitor.},
  author={Hanyang Yu and Su Yan Zhang and John C Chaput},
  journal={Nature chemistry},
  volume={4 3},
The pre-RNA world hypothesis postulates that RNA was preceded in the evolution of life by a simpler genetic material, but it is not known if such systems can fold into structures capable of eliciting a desired function. Presumably, whatever chemistry gave rise to RNA would have produced other RNA analogues, some of which may have preceded or competed directly with RNA. Threose nucleic acid (TNA), a potentially natural derivative of RNA, has received considerable interest as a possible RNA… CONTINUE READING
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