The P{}sroP54 insertion (which is inserted in the region upstream of kay) causes loss of function of both the kay and sro genes; there is a large reduction in the CG12068 transcript level (the annotation corresponding to sro) in homozygous embryos and the P{}sroP54 chromosome fails to complement mutations in both kay (kay1) and sro (sroO4-105 and sro1).
Insertion 500bp upstream of the kay gene.
Homozygous clones in the eye show ommatidial defects; 13% have chirality defects, 10% have rotation defects and 17.3% show loss of photoreceptor phenotypes.
Homozygous clones in the wing do not result in planar cell polarity defects.
Allelic series according to phenotypic strength: kay1 > kayED6315 > kayP54 > kayEY01644 > kay2.