Fig. 9.

Expression of homologs of petal cell developmental regulators. a Normalized read counts of Aquilegia homologs of positive regulators of A. thaliana cell proliferation across development. b Normalized read counts of Aquilegia homologs of negative regulators of A. thaliana cell proliferation across development. For each plot, mean normalized read counts across three biological replicates for each species and developmental stage are presented. The error bars represent the standard error of the three biological replicates used to calculate the mean. Key: A. ecalcarata = lavender, A. sibirica = blue, A. formosa = red, and A. chrysantha = yellow