Table 1.

dab mutations affect the average number of R7 cells per ommatidium in flies carrying a constitutively activated SEVa

GenotypeAvg no. of R7 cells/ommatidium
P[sE-Sev S11]/+; +/+4.0 ± 0.2
P[sE-Sev S11]/+;dab/+3.1 ± 0.3
P[sE-Sev S11]/+; dab/+; P[sE-dab]/+4.1 ± 0.3
P[sE-Sev S11]/Y; P[sE-dab S119A]/+2.5 ± 0.2
P[sE-Sev S11]/Y; P[sE-dab S119A]/+; P[sE-dab]/+4.1 ± 0.3
P[sE-Sev S11-w]/+; +/+2.5 ± 0.1
P[sE-Sev S11-w]/+; P[sE-dab ΔPro]/+3.6 ± 0.3
  • a For each genotype, five to eight eyes were sectioned, and 70 to 100 ommatidia were analyzed in each eye. The average number of R7 cells per ommatidium and the standard of deviation were calculated for each eye and then used to tabulate the average number of R7 per ommatidium and the standard of deviation for each genotype.