wild-type allele
Polytene chromosomes normal.
gypsy insertion in the cis-regulatory region.
-15 kb to +60-65 kb deleted.
haltere
Haltere to wing transformation, phenotype is not enhanced by heterozygosity for ash128 or ash218.
The mutant phenotype of some bx homozygotes and heterozygotes for different bx alleles can be rescued by Ubxbxd-121.