Figure 4.—

nmo modifies the ey small-eye phenotype. (A) Wild-type compound eye. (B) nmo^P mutants have narrow eyes and a square ommatidial array. (C) ey^R compound eyes are small with disorganized ommatidia and uneven eye margins. The ventral row of sensory vibrissae is often duplicated (arrowhead). The most frequent phenotype is shown. (D) nmo^P/+; ey^R/+ trans-heterozygotes display a slightly smaller eye compared to wild type. (E) nmo^P; ey^R/+. The nmo^P eye phenotype is not modified by reducing a single copy of ey^R. (F) nmo^P; ey^R. The size and periphery of the compound eye are rescued compared to C. A single set of ventral vibrissae is present (arrowhead), as in wild type. Flies are oriented with the anterior left. The same results were obtained using nmo^DB24, nmo^adk1, and nmo^adk2.