Homozygous clones in the eye can show clear repolarising effects in the equatorial/polar axis, inducing polarity reversals on their equatorial side. At the poles, the clones exert their maximal influence into surrounding wild-type tissue, inverting the polarity over many ommatidial rows. This effect diminishes progressively with the distance of the clone from the pole, disappearing at the equator. Within the clone, the chiralities of the ommatidia are not randomly arranged; in the equatorial region of the clone the ommatidia are inverted into the inappropriate form found in neighbouring wild-type tissue, but in the polar regions of the clone, the ommatidia are of the correct chiral form (the form found polar to the clone).