Insertion is in the Act5C gene.
Act5CBG01299 homozygous males have significantly decreased levels of aggression. (P < 0.0001; Male aggression index = 3.6). The mushroom body alpha-lobes in these animals are significantly longer (relative to overall brain size) than wild-type (p < 0.05)
Mutants exhibit a quantitative loss of bristles.
Precise excision of the P{GT1}Act5CBG01299 leads to reversion of the decreased aggression phenotype seen in P{GT1}Act5CBG01299 homozygotes.