Insertion in the first intron.
pyrc02915a mutants have a 50% reduction in glial cell number in the eye disc compared to controls.
Homozygous embryos show defects in mesoderm spreading during stage 8, which results in the mesoderm forming a multilayered structure at stages 9-10 (in contrast to wild-type embryos where the mesoderm forms a single layer of cells at this stage).
Stage 14 homozygous embryos have gaps within the row of heart progenitors at stage 14.