Excision of the P{wen.4} element.
suppressor of variegation | dominant, with Dp(1;Y)BarSCV
Viable in transheterozygous combination with E(Pc)1. Position effect variegation (PEV) at the w locus caused by In(1)wm4 is unaffected by E(Pc)rv4. PEV at the B locus caused by Dp(1;Y)BSCV is slightly suppressed by E(Pc)rv4.
E(Pc)rv4 is an enhancer of visible | dominant phenotype of Pc4
E(Pc)rv4 is an enhancer of leg phenotype of Pc4
E(Pc)[+]/E(Pc)rv4 is an enhancer of sex comb | ectopic phenotype of Pc4
Shows weak enhancement of the extra sex combs phenotype of Pc4.
Revertant. Selected as: Viable in combination with E(Pc)1.