fng80/+ flies have normal wings.
fng80 mutants have extra denticles on the abdomen. These denticles lack orientation and are interspersed with the normally-formed denticle rows 2-4.
Transheterozygous fng2/fng80 females have ovaries showing 0% compound follicles, 26% with long stalks 48% of follicles have abnormal epithelium. The long stalk phenotype is sometimes accompanied by a stalk disorganization phenotype.
Mutant clones induced in the equator or dorsal region of the developing eye do not show significant polarity changes either inside or outside the clone boundary. Mutant clones induced in the ventral domain (close to or far from the equator) caused polarity reversals extending up to four ommatidia from the clone boundary. The shift in chirality is observed only outside the clone boundaries towards the normal equator. Photoreceptor numbers are affected in 24% of ommatidia.
fng80/fng52 mutants are weakly viable and exhibit a severe wing margin loss phenotype.
Mutant clones in the wing reveal ectopic wing margins along clone borders, composed of both wild type and mutant cells. Ectopic margins are composed of a mirror image duplication of dorsal-type bristles. Clone boundaries farther from the normal margin often partially or completely fail to induce ectopic margins. Clones contained with the dorsal surface can be associated with an expansion of the dorsal wing surface. The size of distal outgrowths varies with their location in the wing. Some clones are associated with loss of tissue from the wing margin and reduction in size of the wing. fng+ is not autonomously required for wing cell viability.