On the concept of biological function, junk DNA and the gospels of ENCODE and Graur et al.

In a recent article entitled \"On the immortality of television sets: \"function\" in the human genome according to the evolution-free gospel of ENCODE\", Graur et al. dismantle ENCODEs evidence and conclusion that 80% of the human genome is functional. However, the article by Graur et al. contains assumptions and statements that are questionable. Primarily, the authors limit their evaluation of DNAs biological functions to informational roles, sidestepping putative non-informational functions. Here, I bring forward an old hypothesis on the evolution of genome size and on the role of so called junk DNA (jDNA), which might explain C-value enigma. According to this hypothesis, the jDNA functio