Construct: The helix-turn-helix portion of the homeodomain (amino acids 28 to 52) of ro has been replaced with the corresponding amino acids of Dfd.
Dfd::roHTH is a suppressor of ommatidium phenotype of row
Two copies of Dfd::roHTH completely rescue the row phenotype. One copy of Dfd::roHTH partially rescues the row phenotype.