Most homozygous Sox15^KG09145 flies die as pharate adults. The homozygous Sox15^KG09145 escapers are weak and display held-out wings. The held-out-wing phenotype is the result of abnormalities in proximal hinge structures, such as the sclerites, the alula and the costa.

Sox15^KG09145 mutant third instar larval wing imaginal discs show hinge overgrowth that causes extra folds both dorsally and ventrally. There is an increase in cell proliferation in the hinge region of Sox15^KG09145 mutant L3 wing imaginal discs relative to the wild-type. The rate of apoptotic cell death is also increased in Sox15^KG09145 mutant wing discs in the hinge region.

The wing pouch and body wall regions appear unaffected in Sox15^KG09145 mutant third instar larval wing imaginal discs.

Sox15^KG09145 is an enhancer of abnormal size | third instar larval stage | recessive phenotype of wg^spd-fg

Sox15^KG09145, wg^spd-fg has abnormal size | recessive | third instar larval stage phenotype

Sox15^KG09145 is an enhancer of wing hinge primordium phenotype of wg^spd-fg

Sox15^KG09145, wg^spd-fg has wing hinge primordium phenotype