cpb1/cpb[+] is a suppressor of egg | maternal effect phenotype of Lmon\actAFP4mito.UAS.EGFP
The penetrance of the "dumpless" phenotype seen in eggs derived from females expressing Zzzz\actAFP4mito.Scer\UAS.T:Avic\GFP-EGFP is partially suppressed by cpb1/+.