Df(2R)edl-S0520/Df(2R)edl-L19 and Df(2R)edl-S0520/Df(2R)Exel7157 transheterozygotes, but not Df(2R)edl-S0520/Df(2R)ED3636 transheterozygotes, show cardioblast patterning defects in the embryo; Df(2R)edl-S0520/Df(2R)Exel7157 transheterozygous embryos also show very few ostial cardioblasts, as compared to controls.
Inferred to overlap with: Df(2R)edl-L19.
Inferred to overlap with: Df(2R)Exel7157.
Df(2R)edl-S0520 mutant embryos show cardioblast (CB) patterning defects, and a higher generic CBs:ostial CBs ratio than the typical 4:2 ratio.
Chromosome carries a second site mutation in stj.