Co-evolution between a `parasite gene` and its host
(PHYSorg.com Biology)

A Danish research team has delineated a complex symbiosis between a `parasitic` noncoding RNA gene and its protein-coding `host` gene in human cells. The study reveals how co-evolution of the host gene and parasite gene has shaped a feedback mechanism in which the parasite gene plays a completely new and surprising part as regulator of the host gene protein production. The breakthrough finding opens an entirely new avenue of research in gene expression.