[MeanWestTexan]

"Please...a single example of a positive mutation"

Here are two:

http://mednews.stanford.edu/releases/1998/novreleases/mutation.html

http://www.fda.gov/fdac/features/795_antibio.html

[dread78645]

mutant place mark

[metacognative]

Losing DNA information is not a positive step.
I'll come back tomorrow.....