%0 Journal Article %T On the origin of the genetic code: a 27-codon hypothetical precursor of an intricate 64-codon intermediate shaped the modern code %J Comptes Rendus. Biologies %D 2020 %P 15-52 %V 343 %N 4 %I Académie des sciences, Paris %U https://doi.org/10.5802/crbiol.47 %R 10.5802/crbiol.47 %G en %F CRBIOL_2020__343_4_15_0