Imprecise excision of the progenitor insertion, resulting in a deletion that includes the first exon (this contains part of the catalytic domain).
Developmental apoptosis is normal in embryos that are maternally and zygotically mutant for decayΔK2.
Developmental apoptosis is normal in homozygous third instar eye discs.
γ-ray induced apoptosis is not suppressed in homozygous third instar wing discs.