Fig. 3. fmi null eyes exhibit a classical ommatidial polarity phenotype. Sections of adult eyes (left) and the corresponding schematics (right). (A,B) fmi¹⁹² mutant clones have a tissue polarity phenotype. Areas shaded in red represent wild-type tissue; white areas represent mutant clones and include both mutant and mosaic ommatidia. fmi¹⁹² clones close to the equator (B) have a stronger polarity phenotype. (C) EGUF-fmi¹⁹² eyes, which are completely mutant for fmi, also display a typical polarity phenotype. (See Table 3 for quantitative data.) Anterior to the right.