Xlae\hhb.PD has lethal | female phenotype, suppressible by hryhb.PP
Xlae\hhb.PD is a suppressor of lethal | male phenotype of schb.PP
Expression rescues female lethality of schb.PP. Coexpression of hhb.PP and Xlae\hhb.PD in females does not decrease viability, rescuing the lethal effect of Xlae\hhb.PD.