UASp regulatory sequences drive expression of trk containing the amino acid replacement R76A.
Scer\GAL4VP16.nanos.UTR/trkR76A.UASp fails to rescue trkΔ
Maternal expression of trkR76A.Scer\UAS.P\T under the control of Scer\GAL4nos.UTR.T:Hsim\VP16 fails to rescue the phenotype of embryos laid by trkΔ females.