brain ribonucleic acid amount cerebellum molecular composition trait cerebellum ribonucleic acid amount 2025-12-02T22:40:54Z Trait.ontology VT:0011261 CMO:0003928 The proportion, quantity, or volume of ribonucleic acid in the part of the metencephalon that lies in the posterior cranial fossa dorsal to the pons and medulla that is concerned with the coordination of movement and learning of motor skills. Ribonucleic acid is a high molecular weight, linear polymer composed of nucleotides containing ribose and linked by phosphodiester bonds. cerebellum RNA amount