Fig. 5From: Natural selection in a population of Drosophila melanogaster explained by changes in gene expression caused by sequence variation in core promoter regionsExpression level of different alleles of CPRs for CHKov1 and CG33506. Expression levels of each allele for CHKov1 (a) and CG33506 (b) were retrieved from a database in female and male flies [16] found in a natural population Color (red, blue, and green) and alphabet (a-f) correspond to those in Fig. 2 Back to article page