Fruit flies go through a whole series of transitions between life stages, as shown here. The larval molts are called instars. The mature larva forms a prepupa, and then a pupa, which undergo ...

The flies only fly for one to two weeks in their life cycle and that is when they have to reproduce by laying eggs that become ... We see this as an evolutionary system where the development of ...

The monarch butterfly life cycle begins with a whirl of wings in ... a chrysalis and watched this butterfly slowly emerge and fly away. The process made me think about the importance of learning ...