Which is more stable chemically: DNA or peptide Assuming enzyme-free environment, and the DNA and peptide are lyophillized, and then stored in vials under the same conditions (temperature and humidity).

On average, which would be more chemically stable,


in terms of backbone cleavage?
in terms of loss of side chain?
Well, more than 1 year has passed, and now the field of palaeo-proteomics is born, I think the verdict is clear:

The winner is PEPTIDE.
Still found intact in tens of millions old extinct animals, where DNA had degraded for long.

Source: https://www.nature.com/articles/nature14249