Amino acids 63 to 721 have been deleted from the already mutated bratfs1.UAS sequences.
bratΔ63-721.fs1.UAS/Scer\GAL4VP16.nanos.UTR fails to rescue bratfs1
bratΔ63-721.fs1.Scer\UAS when driven by Scer\GAL4nos.UTR.T:Hsim\VP16 fails to rescue the abdominal phenotype of bratfs1/Df embryos.