Fig. 1. The loss of Glass results in defects in eye morphology and absence of differentiated photoreceptors.

(A–G) Transmission and Scanning electron microscopy of (A) wild type, (B–D) gl mutant retinas, and (E–G) gl mutant retinas containing a glass genomic rescue construct (gl-BAC). In gl mutant retinas the detection of differentiated photoreceptors was based on the presence of a rhabdomere, red arrows. The TEM images in B′ – F′ putatively highlight photoreceptor cells in the gl mutant alleles. Samples are from newly emerged adult Drosophila. SEM Scale Bar-100 um TEM Scale Bar-1um