A significant proportion of Kap-α316-8 mosaic flies exhibit mutant R7 photoreceptor cells and do not phototax to visible light.
Kap-α316-8 MARCM clone R7 axons terminate correctly in the M6 layer, although a significant proportion extend laterally into columns occupied by neighboring wildtype R7s.
Kap-α316-8 mutant R7 photoreceptor cells target correctly at 40 hours after puparium formation (APF), but extend laterally into neighboring columns at 50 hours APF.