Some scientists think that XNA evolved into RNA, which then evolved into DNA forming the very beginnings of life. Scientists showed that L-aTNA fragments could interlink on complementary L-aTNA, RNA and DNA templates without the need for enzymes.…

A Model for the Emergence of RNA from a Prebiotically Plausible Mixture of Ribonucleotides, Arabinonucleotides, and 2'-Deoxynucleotides