The website here is a cyberspace guide to Drosophila development and metazoan evolution. Drosophila is a genus of a small, two-winged fly that is a favorite of researchers of the mechanisms of inheritance. Called The Interactive Fly, this website is a top-flight model of how a subject can be centered on one virtual page while linked to massive, detailed and interlinked information. It is a virtual swarm of fly knowledge. Don’t miss the slideshow in the left column called All I Really Needed to Know I Learned During Gastrulation. Animal sciences.