I think RNA (in particular, ribozymes) does those things.
But DNA is effectively separation of concerns: RNA systems evolved to RNA mediated systems with DNA as more inert and reliable storage and enzymes as more effective catalysts. Or so the RNA world hypothesis goes.
But DNA is effectively separation of concerns: RNA systems evolved to RNA mediated systems with DNA as more inert and reliable storage and enzymes as more effective catalysts. Or so the RNA world hypothesis goes.