[muawiyah]

Every change in DNA is not "evolutionary" in nature. However, when it comes to viruses they're more like loose code ~ like the old JCL IBM kept under continuous development ~ you could use the stuff, or not, to make jobs run. In fact, there were so many pathways to making stuff happen a certain way, the meaning of the word "language" was strained.

It's like this ~ sometimes change is effectuated by putting in a new part ~ like a new carburetor in your '57 Chevy. Sometimes you get a Corvette off the same line.

See the difference?

[AndyJackson]

Every change in DNA is not "evolutionary" in nature. H

that is your error. Every change in DNA is evolutionary in nature. The question is whether what the change means is significant, and whether the resulting organism is more or less fit to survive in the current environment. Some mutations are insignificant. Some are devastating.