Expression of E(spl)m8-HLH cDNA is driven by hb promoter sequences.
Expression in females does not affect viability.
E(spl)m8-HLHhb.PD is a non-suppressor of lethal | male phenotype of schb.PP
E(spl)m8-HLHhb.PD is a non-suppressor of lethal | female phenotype of schb.PP
Expression fails to rescue female lethality of schb.PP.