Structurally, DNA and RNA are nearly identical. However, there are three fundamental differences that account for the very different functions of the two molecules. RNA has a ribose sugar instead of deoxyribose sugar like DNA.
Gene expression in prokaryotes can be regulated at multiple stages including transcriptional and co-translational. Operons respond routinely to the presence of specific metabolites and change the availability of activators and repressors while speific end products of biosynthetic pathways can regulate the translatability of mRNAs for new proteins.
Typically, utopian societies crumble into dystopias because of civil wars or
corrupt governments. Hope that helps!