RNA
RNA (Ribonucleic acid) was a nucleic acid.
The vegetation on the planet of the P'tarr had coded RNA programming that allowed for learning. (PROSE: One Bad Apple)
The Vrall on the Moon created miniature RNA spores encoded with the construction information for a space engine, which they fired towards Earth with a vacuum gun. Eventually, one spore struck the mind of a Professor Boyes-Dennison, who developed the engine with the aid of his twenty-two year old daughter Emily. (PROSE: Imperial Moon)
GRUMPY used memory RNA to encode itself into the environment of Yemaya 4. (PROSE: Sleepy)
A swamp monster that landed on the planet Sunday could create a protein-RNA mix to control smaller animals, such as the Sundayan otters; this mix implanted memories and images into them and generally led to a rise in aggression. (PROSE: Wetworld)