MED26MB00704 is homozygous lethal. Although homozygous MED26MB00704 embryos hatch, they die before the third larval instar.
Analysis of genetic mosaics indicate that MED26MB00704 mutant cells are able to proliferate and survive in imaginal discs. However, induction of MED26MB00704-mutant clones in the second larval instar causes extensive lethality at the pupal stage, and surviving adults are frequently missing parts of the wing margin.
MED26MB00704 is rescued by MED26Ubi-p63E.FRT.Tag:FLAG
Viable excision lines of Mi{ET1}MED26MB00704 can be recovered after crossing in the Minos transposase, indicating that the insertion was responsible for the lethality.