P{lArB} element is retained but 3' flanking genomic DNA is deleted, removing the first exon and part of the second exon of the "rn" transcript of the rn locus.
visible
visible (with Df(3R)rn20)
tarsal segment (with Df(3R)rn20)
wing hinge
rnΔ2-2 is a null allele for the "rn" mutant phenotype but does not cause "roe" phenotypes. rnΔ2-2/Df(3R)rn20 adults show fusion of tarsal segments.
Mutant flies lack the wing hinge.