Experimental evolution of antibiotic resistance in bacteria.(INQUIRY & INVESTIGATION) From: The American Biology Teacher | Date: February 1, 2007| Author: | COPYRIGHT 2007 National Association of Biology Teachers. This material is published under license from the publisher through the Gale Group, Farmington Hills, Michigan.  All inquiries regarding rights should be directed to the Gale Group. (Hide copyright information) Copyright information

Evolution is typically measured as a change in allele or genotype frequencies over one or more generations. Consequently, evolution is difficult to show experimentally in a semester-long lab course because most organisms have longer generation times than fifteen weeks. Therefore, we designed an experiment to demonstrate and study evolution using bacteria as a model system.

Bacteria are ideal organisms for studying evolution because they reproduce quickly and asexually, they permit the study of large sample sizes, they are easy to propagate, and it is easy to manipulate their ...

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