PROBLEM SOLVED. “A widely accepted resolution to the seemingly inextricable duality of genotype–phenotype is that the modern ‘DNA–protein’ world evolved from simpler precursor system involving only one major molecular species that played both the role of information carrier and of enzymatic catalyst. In modern organisms, RNA is a biochemical mediator, enabling the translation of DNA to protein.”
http://rsif.royalsocietypublishing.org/content/10/79/20120869.short