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JeffKos

Pre-biologic generation of RNA monomers?

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I’m curious about how biological processes arose from pre-biological ones (i.e., how life arose).  The “RNA World Hypothesis” suggests that RNA-like molecules are a good candidate.

However, in order to entertain this hypothesis, one has to presume there was either a natural abundance of nucleotide monomers floating around – in an environment that encouraged them to form into polymers… or, there was some natural process that was essentially producing RNA chains, of various lengths and consisting of various nucleotides.

Question:  Are we aware of any natural (non-biological) environments on earth today, or any natural (non-biological) mechanisms, by which nucleotide monomers (or oligomers) are produced?

Or, for that matter, ANY monomer – polymer families that are naturally occurring - from which RNA might have slowly evolved / emerged?

And as long as I’m on the topic, what about sugar polymers?  Are there any examples today of the non-biological creation of sugar monomers or oligomers?

Thanks in advance,

JeffKos

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On the matter of sugars, an interstellar origin is possible:

Glycolaldehyde, the simplest aldehyde sugar was the first sugar detected in interstellar space,  almost twenty years ago.

Since then this same sugar has been detected in a comet. 

Laboratory work with cometary ice analogs has confirmed the formation of sugars in these conditions.

Delivery of prebiotic organic compounds by comet or asteroid is accepted as probable.

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        Clay on the bottom of the ocean catalyse these large molecules..                                                                                                                                                                                                                     

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