Hi Wake,
the link below is to an article about bacterial increasing resistance to poison, (bacteria are popular due to the short life cycle, fruit flies about 10 days, oak trees [Quercus sp.] don't have acorns until about 90yr old so difficult to test out evolutionary theories)
Richard Dawkins in 'The Blind Watchmaker' also covers similar


http://www.corante.com/loom/archives...h_foretold.php

'.......But a Canadian evolutionary biologist named Graham Bell suspected that bacteria--and their evolutionary potential--might be more powerful than others thought. Michael Zasloff for one didn't think so. But as a good scientist, he was willing to put his hypothesis to the test. Remarkably, it failed.
The researchers began by exposing bacteria to low levels of antimicrobial peptides. They would then use a few of the survivors to start a new colony and then expose the bacteria to slightly higher levels of the poison. As they report in the Proceedings of the Royal Society of London, 30 out of 32 colonies evolved to be resistant to a full does of antimicrobial peptides. It took only about 600 generations for them to do the impossible. .....'

rgds KLK