Amino acid replacement R1062K, which maps to a highly conserved region of the kinase domain. P{UAS-Egfr.DN3} remains otherwise intact.
EgfrDN3.Scer\UAS; Scer\GAL4Bx-MS1096 flies have small curved wings with vein truncations. EgfrDN3.Scer\UAS; EgfrScer\UAS.cBa; Scer\GAL4Bx-MS1096 flies have a much more sever wing phenotype: wings are small rounded with large amounts of ectopic vein material.