Figure 1.

Cell death events during the Drosophila life cycle. An illustration of Drosophila development. A fertilized egg develops through 17 stages of embryogenesis, culminating in the hatching of a 1st instar larva. The larva molts through two additional stages (2nd and 3rd instar), then undergoes metamorphosis. An adult fly emerges from the pupa and searches for a mate to continue the cycle. Forms of cell death discussed in this review are shaded according to the developmental stage in which they occur. Select examples of other cell death events are listed in gray.