FLP mediated-recombination between the two progenitor insertions has resulted in the inversion of the genomic sequence between them.
In(2R)51F11-56E2 does not have any obvious detrimental effect on viability. Mating ability of males and sperm performance appears normal. Mutant males show an attenuated response to acetone (at a concentration of 10[-4.5]) and mutant females show an attenuated response to ethanol (at a concentration of 10[-3]).