Ommatidia at the border of and within homozygous clones in the eye show polarity defects, including misrotations, wrong chirality or symmetrical, non-chiral ommatidia. Photoreceptor cells R3, R4, R1 and R6 show incomplete transformation to R7 in mutant flies. Misrotated R3/R4 precursor pairs are seen in homozygous clones in the third larval instar eye disc. These cells are misrotated by approximately 45^o or 90^o from their normally oriented neighbours.