Heterozygous animals exhibit an outstretched wing phenotype. Although defects are seen in the dorsal wing hinge, the ventral wing hinge exhibits defects. The ywllo club is consistently either absent or much smaller than seen in wild-type. Some ventral hinges show deformation of the proximal ventral radius and pleural wing process.

30% of wg^P/wg^17en40cP1 flies show development of wing-like structures on the prothoracic segment, ranging from rudimentary to well formed. 25% of wg¹/wg^P flies have wings on the prothoracic segment, and mesothoracic wings and metathoracic halteres develop variably. 25% of wg^l-17/wg^P and wg^l-16/wg^P flies have wings on the prothoracic segment, and the mesothoracic wings and metathoracic halteres are always absent. 10% of wg^l-16/wg^P flies show a varying degree of transformation of the metathoracic legs to halteres, ranging from graded removal of the distal segments (tibia and tarsus), through distortion of the femur and graded removal of leg bristles, to transformation of the coxa and trochanter into the first and second segments of the haltere.

Heterozygotes exhibit an increase in the number of sternopleural bristles, affecting macro- and microchaetae. wg^P/wg^Sp-1 individuals are lethal. Adult escapers lack one or both anterior dorsocentral bristles and more rarely also the posterior postalar bristle and the presutural bristle. They also exhibit loss of distal antennal segments and in rare cases exhibit antennal duplication. Individuals in combination with wg^Sp-revP, wg^l-16 and wg^l-17 are pupal lethal, when in combination with wg^spd-j2 individuals die before pupariation. Individuals are adult viable and exhibit the wing phenotype when in combination with wg¹.

bun^rI043 mutant phenotype is suppressed by loss of one copy of hh, restored to wild type.

Similar mutant leg phenotypes, e.g. duplications and bifurcations, are produced by dsh clones, dsh, wg double heterozygotes and wg mutants. There is allele specificity in these interactions. A small fraction of wg^P/wg^l-17 pharate adults have misoriented bristles on the notum, head and abdomen.

Adult homeotic transformation of wing to notum.

pupal lethal