[roughly]

So something to keep in mind when looking at biological systems, and especially when looking at genomics - evolution doesn't actually have a master plan or agency, it's just drift and reproduction. There's a lot of reuse and a lot of parsimony that can look elegant, but there's no 'design' process of evolution - it's a pile of things that looked enough like other stuff that over time with some tweaks they could take on dual roles. There's also no separation of concerns - DNA is a molecule, and it's acted upon by other molecules following the same rules of chemical and quantum interactions that affect everything else. Certain RNA sequences aren't transcoded but rather fold into functional molecules and enzymes, and protein folding and subsequent structure and function is affected by how fast the RNA is transcribed, which is affected by the population of available tRNA molecules. Genomics only looks like information - it's still chemistry.