Loss of a single copy of wg (wgl-12), ct (ct53d) or vg (vg1) in sno71e3 flies causes extensive loss of wing margin tissue. Single copy loss of H (HE31) is able to suppress the wing margin defects of sno71e3 flies. Loss of a single copy of Su(H) (Su(H)2) causes pupal lethality at 23oC and at 20oC some pupae eclose and exhibit severe wing margin defects.
A duplication of N rescues many of the defects of sno mutants. There is a synergistic interaction with 'nd' alleles of N, and a suppressive interaction with alleles of the 'Ax' class of N. H99 and sno71e3 show a mutually suppressive interaction. The confluens phenotype of Dl3 is suppressed by sno71e3. Flies hemizygous for sno71e3 and heterozygous for groE73 suffer lethality with a few escapers that show an eye roughening phenotype.