FlyBase curator comment: this entry is used to capture phenotypic information when the particular allele (or allele combination) used by the author could not be determined but the context of the experiment suggests that the phenotype being described is some kind of loss of function.
Heterozygous males and females show no significant differences from wild type in terms of flight, courtship, feeding behaviour and negative geotaxis during early life. There is no alteration in the rate or timing of developmental events. Homozygotes show only a 10-20% increase in mean life-span compared to controls. Hemizygotes have a 10-20% shorter mean life-span than homozygous mutants.