A) Proportion of brains exhibiting male fruFLP∩4-57 GFP expression (n = 14) and locations of GFP(+) neurons in fruM clusters (blue dots). B) Normalized (see methods) dimensions of the tritocerebral arbors measured in the lateral, D–V, and A–P axes for male fruM+/−, female fruM+/−, male fruM−/− mutant brains (n = 13, 8, 6). The tritocerebral arbors male fruM heterozygous brains were significantly larger than either male null fruM mutants or female fruM heterozygotes (p<.001). Diagram and table comparing P[GawB]4-57:FruFLP overlap, C) Cha-Gal80-delimited P[GawB]4-57:FruFLP overlap, fruFLP∩4-57 GFP expression, to RNAi-mediated or TNT-mediated behavioral phenotypes.