Heterozygotes do not produce a mutant phenotype in the laterals of the arista.
Sbunspecified has posterior scutellar bristle phenotype, enhanceable by E(f)1
Sbunspecified has anterior scutellar bristle phenotype, enhanceable by E(f)1
sqh1 shows no interaction with Sbunspecified (assayed in terms of a malformed leg phenotype). sqh2 shows no interaction with Sbunspecified (assayed in terms of a malformed leg phenotype).
Phenotype is dominantly enhanced by E(f)1. The posterior and sometimes anterior scutellar bristles are hooked, with the hook directed upwards, in E(f)1/+ ; Sbunspecified/+ flies.
Fourteen unspecified alleles.