The lowly fruit fly (Drosophila) is the research biologist’s friend in fields such as biomedical science, genetics, and developmental biology. The insect takes up little space, is easily fed, has just four pairs of chromosomes, and reproduces rapidly.

One of the mysteries of evolution (there are so many) is the origin of teeth.

We are all familiar with vocalizations in the animal world. For example, dogs bark, birds sing, frogs croak, and whales send forth their own distinct sounds.¹ Recently, a detailed investigation has been conducted to determine sounds made by animals previously thought to be mute.