Hundreds of viruses, bacteria, fungi, insects, and weeds
have evolved resistance to drugs, herbicides, fungicides,
or pesticides, providing examples of evolution in action.
In many cases, we know the molecular mechanisms of
the evolutionary changes involved. Think about how
the evidence from these studies compares with the evidence for evolution in Darwin’s finches and HIV:
Davies, J. 1994. Inactivation of antibiotics and the dissemination of
resistance genes. Science 264: 375–382.
Gaines, T. A., W. Zhang, et al. 2010. Gene amplification confers
glyphosate resistance in Amaranthus palmeri. Proceedings of the National
Academy of Sciences USA 107: 1029–1034.
Van Rie, J., W. H. McGaughey, et al. 1990. Mechanism of insect resistance to the microbial insecticide Bacillus thuringiensis. Science 247:
72–74.