wΔP has abnormal eye color phenotype, enhanceable by ph-pP1
wΔP has pigment cell phenotype, enhanceable by ph-pP1
Eye colour: a few lines carrying one copy of P{ΔP-yellow} show a weak decrease in eye pigmentation in the presence of ph-pP1. The frequency of lines showing a decrease in eye pigmentation is increased if the flies are carrying two copies of P{ΔP-yellow}.