I would say that, on balance, one must prove DNA to be not-junk. The idea that you can have DNA of some critter and there aren't some errors, unused bits, and

I would say that, on balance, one must prove DNA to be not-junk. The idea that you can have DNA of some critter and there aren't some errors, unused bits, and so on, after what must be trillions of copies, well, I would find it statistically unlikely. Like saying you have a program with millions of lines of code and it is completely error-free.