Contains Tb1 mutant genomic DNA extending from the 5' regulatory region through the 3' UTR. The mutant protein is tagged with DsRed(Unk) fluorescent protein.
Pupae carrying two copies of Tb1.T:Disc\RFP have a lower axial ratio (ratio of body length to body width) compared to wild type. This short and stout body shape is also seen in second and third instar larvae.