Stage 14-15 mutant embryos show defects in dorsal branch formation in the tracheal system; 11% are missing.
Homozygous embryos have tracheal defects similar to those seen in stumpsYY202 embryos.
stumpsems7 has embryonic/larval dorsal tracheal branch phenotype, enhanceable by robo28
stumpsems7 has embryonic/larval dorsal tracheal branch phenotype, enhanceable by Sar1EP3575
stumpsems7 has embryonic/larval dorsal tracheal branch phenotype, non-enhanceable by Dlc90FEP3634
stumpsems7 has embryonic/larval dorsal tracheal branch phenotype, non-enhanceable by ballEP863
stumpsems7 has embryonic/larval dorsal tracheal branch phenotype, non-enhanceable by dcoEP3280
stumpsems7 has embryonic/larval dorsal tracheal branch phenotype, non-suppressible by Dlc90FEP3634
stumpsems7 has embryonic/larval dorsal tracheal branch phenotype, non-suppressible by ballEP863
stumpsems7 has embryonic/larval dorsal tracheal branch phenotype, non-suppressible by dcoEP3280
learobo2-8 enhances the defects in dorsal branch formation seen in stumpsems7 embryos; in the double mutant 71% are missing and 8% are stalled. sar1EP3575 enhances the defects in dorsal branch formation seen in stumpsems7 embryos; in the double mutant 31% are missing and 5% are stalled. In addition, 24.5% of the double mutant embryos show defects in germ-band retraction.