New organisms have been formed using the first ever 6-letter genetic code

Re:New organisms have been formed using the first ever 6-let... by arximboldi on Monday January 30, 2017 @12:22AM (#13518896)

There is this soviet science fiction story with a similar premise, but self-replicating machines:

Crabs On The Island (Russian 1958, English 1968) (original: Kraby idut po ostrovu), by Anatoly Dneprov