Mutations in CCS4 in SU9 and SU11 are dominant. a) Ten-fold dilution series of diploid (+/+, Δccs5/Δccs5, Δccs5/Δccs5  CCS4-SU9, and Δccs5/Δccs5 CCS4-SU11) strains were plated on minimal medium and grown phototrophically (with 30–50 µmol/m²/s of light) at 25°C for 14–18 days (left panel) and mixotrophically in 0.3 µmol/m²/s for 20–21 days (right panel). Two representatives of each diploid constructed with a Δccs5 strain are shown. b) The fluorescence induction and decay kinetics of one representative diploid strain. Strains are the same as in a).