A genomic fragment encompassing sequences from 500bp upstream of the 5' end of the dos cDNA to exon 3 was fused to the remaining dos cDNA.
wild-type
dos+mBa rescues dosP115
dos+mBa rescues dosR31
A single copy of dos+mBa rescues the lethality of homozygous dosR31 or dosR31 and produced flies with no phenotypic abnormalities. A single copy of dos+mBa also rescues phenotypes associated with somatic clones for dosR31.