A case for an alien ancestry

  title={A case for an alien ancestry},
  author={A. G. Cairns-smith},
  journal={Proceedings of the Royal Society of London. Series B. Biological Sciences},
  pages={249 - 274}
  • A. Cairns-smith
  • Published 6 May 1975
  • Biology
  • Proceedings of the Royal Society of London. Series B. Biological Sciences
Many modern biochemicals can be formed in significant yields under loosely controlled abiogenic synthetic conditions. They are, in this sense, easy to make and appear to be among the moderately common molecules of the Universe. We might expect a highly evolved life form like ours to have perfected a system that uses a kit of easily made parts. This is a sign of sophistication, but it may well be the hard won outcome of a prolonged evolution. It is by no means clear that this evolution started… 

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