Eye phenotype of a dominant Inx2 mutant that genetically interacts with sodium pump components.
Scanning electron micrograph of a whole fly eye (left) and a close-up of individual facets from an animal of genotype Inx2TA181 / + ; +/+ ; ATPαDTS1R1 / +. Mutation of a single active copy of the Na+ / K+ ATPase α subunit in a fly carrying the dominant Inx2 mutation results in slightly rough eyes with ectopic interommatidial bristles (iob). This represents a dosage-sensitive genetic interaction. Om – ommatidia. Black scale bar = 2μm.