[quote]DNA is DNA. Why would it even need to exist, or even evolve to exist if the organisms beforehand were already in a state of environmental equilibrium? Remember the insect scenario in the OP? Those environmental hazards had to have always been present and have to be day in order to discourage this evolutionary process from reversing.[/quote] This is simply incorrect. Environmental hazards that caused the change can dissapear, and until that change is replaced or selected against, it will remain. Things don't "devolve" they just keep changing. I can't be any more clear. If you insist what is in quotes is true, give an example of what you describe happening. As for the rest, the fact that you are a genetically unique individual proves that DNA is the mechanism. That you claim hasn't been found. If you think the mechanism hasn't been found then explain how genetic differences selected for or against by natural selection doesn't do what evolution claims they do.