Homozygotes and hemizygotes die during the larval and pupal stages and have small imaginal discs. Homozygotes sometimes give rise to pharate adults. Adult tissues derived from the imaginal discs are reduced and partially differentiated in these pharate adults, while the size of tissues derived from the histoblasts is normal. The eye portion of the third larval instar eye-antennal imaginal disc of sglSG9/sglA31 flies is smaller than normal.
imaginal discs small
sglSG9 is rescued by sglUbi-p63E.PH
Homozygotes are generally completely rescued by sglUbi-p63E.PH, although some sglUbi-p63E.PH lines show partial rescue, producing flies with a bat shaped wing and wing margin and vein defects.