Somatic clones in eye imaginal discs that express two copies of spiCS.s.Scer\UAS.T:Rnor\CD2.T:Ivir\HA1 under the control of Scer\GAL4Act5C.PU recruit ectopic photoreceptors. Expression of a single copy of spiCS.s.Scer\UAS.T:Rnor\CD2.T:Ivir\HA1 results in loss of R1-R7 photoreceptors.