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All Life on Earth Comes From One Single Ancestor. And It's So Much Older Than We Thought.
(www.popularmechanics.com)
this post was submitted on 15 Jul 2024
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well, we need RNA before DNA. and we already have rna origin theories, so no, space dna doesn't seem to fit there as an emergent property of rna to self replicate.
here's a good one https://en.m.wikipedia.org/wiki/RNA_world