PROTO-GENES. “It is now widely accepted that a large fraction of the genome is being transcribed, with many long-noncoding RNA molecules being generated. Interestingly, a considerable fraction of these RNAs are also associated with ribosomes, suggesting they are actively translated. Such short peptides form proto genes, which can be subject to selection.”
http://www.sciencedirect.com/science/article/pii/S0168952515000347