Imprecise excision of the progenitor insertion. Part of the original element remains and there is a chromosomal rearrangement adjacent to the site of the insertion.
lethal
eye photoreceptor cell (with sra1)
mitochondrion (with sra1)
sra1/sra62 adults show an increase in the number and a decrease in the size of mitochondria in the photoreceptor axons at the level of the lamina.