A short biography of a creature that changed science.

There's a buzz in the air, the sound of a billion wings vibrating to the tune of scientific success. For generations, the fruit fly has been defining biology's major landmarks. From genetics to development, behavior to aging, and evolution to the origin of the species, it has been a key and, outside academic circles, an unaccredited player in some of the twentieth century's greatest biological discoveries. In fact, everything from gene therapy to cloning and the Human Genome Project is built on the foundation of...