Kevin cites:
Finch beaks
Drosophila adaptation experiments (not the ones where they zap them with
x-rays to see what kinds of mutants arise)
Bacterial antibiotic resistence (with the added twist that they do not
revert to a non-resistent state when antibiotics are removed)
Plant heavy metal tolerance
Bacterial adaptation of using toxic waste as food
Finch beaks are an interesting case, but not very instructive because the
process cannot be observed, so we can only imagine what must be
responsible. This would be a poor substitute for the Peppered moths.
Drosophila adaptation experiments is far too general a category to be of
much use, although I am sure there must be some specific cases that would
be useful.
Bacterial antibiotic resistance falsifies the prediction of evolution, and
this would surely not be a good example to use.
Plant heavy metal tolerance I am happy to plead ignorance on. Could you be
more specific?
Bacterial adaptation to whatever. If these are good illustrations, why,
when we have known the problems with the peppered moth story for years,
have they not already been substituted in the textbooks?