About 43% of ommatidia in argos^Δ7/argos^5F4 animals exhibit extra R cells. Of those that ommatidia that remain about 45% exhibit misrotations, about 5% exhibit achirality, and none exhibit the wrong chirality. About 16% of ommatidia in argos^5F4/argos^rlt animals exhibit extra R cells. Of those that ommatidia that remain about 53% exhibit misrotations, about 2% exhibit achirality, and about 0.3% exhibit the wrong chirality.

In argos^5F4/argos^Δ7 transheterozygotes 45% of adult ommatidia have extra photoreceptors. Many of the ommatidia with a normal complement of photoreceptor cells have polarity defects up to 59% of ommatidia are misrotated, while only 5% appear achiral and usually less than 1% have the wrong chirality. It appears that a transformation of mystery cells to photoreceptor R3/R4 is the cause of the extra photoreceptor cells. When the eye discs of these mutants are examined about 60% of immature clusters exhibit extra photoreceptor precursor cells. In row 7-8 the number of extra cells decreases to about 25%. In the adult only about 15% of clusters have ectopic R3/R4 cells.