Drosophila - more commonly known as fruit fly.
Image courtesy of Thomas Deerinck, NCMIR, UCSD.
A colorized, scanning electron micrograph of a Drosophila melanogaster, also known as the fruit fly. It is one of the most widely used and understood model organisms, and is important fro learning how genes and the environment interact to affect behavior. In addition to being small, cheap and easy to house in the lab, they share 75% pf the disease-causing genes found in humans.