Scer\FRT-mediated recombination between the two progenitor insertions has resulted in the deletion of the genomic sequence between them. The deletion is reported as 15,396 in length. Breakpoint 1 (corresponding to the P{XP}d00050 insertion site) was calculated as 15,395 bp upstream of the PBac{WH}f07683 insertion site since the P{XP}d00050 insertion site is unreported.
No clear developmental defects are observed in insbΔ1 mutant flies (in which the function of CG14478, Tes and qkr54B has been restored using P{CG14478-Tes-qkr54B-mCherry}, which comprises of the CG14478T:Disc\RFP-mCherry, TesT:Disc\RFP-mCherry and qkr54BT:Disc\RFP-mCherry alleles). The sensory bristles show a normal pattern on the body surface.
insbΔ1, Tes+t22, qkr54B+t22, CG14478+t22 is an enhancer of visible | dominant phenotype of HE31, insv23B
insbΔ1, Tes+t22, qkr54B+t22, CG14478+t22 is an enhancer of macrochaeta phenotype of HE31
insbΔ1, Tes+t22, qkr54B+t22, CG14478+t22 is an enhancer of macrochaeta phenotype of HE31, insv23B
insbΔ1/Df(2R)BSC406 is a suppressor of macrochaeta phenotype of N55e11
No detectable macrochaetae phenotypes are observed in insv23B, insbΔ1 double mutant flies in which the function of CG14478, Tes and qkr54B has been restored using P{CG14478-Tes-qkr54B-mCherry} (which comprises of the CG14478T:Disc\RFP-mCherry, TesT:Disc\RFP-mCherry and qkr54BT:Disc\RFP-mCherry alleles).
insv23B enhances the double-socket macrochaetae phenotype seen in HE31/+ mutants. The bristle loss phenotype is further enhanced by loss of insb, using insbΔ1, in which the function of CG14478, Tes and qkr54B has been restored using P{CG14478-Tes-qkr54B-mCherry} (which comprises of the CG14478T:Disc\RFP-mCherry, TesT:Disc\RFP-mCherry and qkr54BT:Disc\RFP-mCherry alleles).
insbΔ1/Df(2R)BSC406 suppresses the bristle density phenotype seen in N55e11/+ mutant flies.
The bristle loss phenotype seen in HE31/+ mutant flies is enhanced by loss of insb (using insbΔ1, in which the function of CG14478, Tes and qkr54B has been restored using P{CG14478-Tes-qkr54B-mCherry} (which comprises of the CG14478T:Disc\RFP-mCherry, TesT:Disc\RFP-mCherry and qkr54BT:Disc\RFP-mCherry alleles). Expression of insbT:Avic\GFP rescues this phenotype, returning the number of transformed macrochaetae to levels seen in HE31 heterozygotes alone.
This deficiency has been used as a null allele for insbΔ1 when in combination with P{CG14478-Tes-qkr54B-mCherry}.