UASt regulatory sequences drive expression of a truncated form of by which lacks amino acids 1-450.
byΔN.UAS/Scer\GAL4Bx-MS1096 fails to rescue by2
Expression of byΔN.Scer\UAS under the control of Scer\GAL4Bx-MS1096 fails to rescue the wing blister phenotype of by2 homozygotes.