Ubiquitous expression of Tim17bdsRNA.Scer\UAS under the control of Scer\GAL4unspecified results in most animals arresting development and dying at an early embryonic stage. The mitochondria of the midgut of escaper second instar larvae usually appear abnormal; an abnormal structure surrounded by a double membrane with residual cristae is often seen. The brains of escaper first instar larvae show an increase in apoptosis compared to wild type.