Fig. 9

Results of the qPCR analysis showing the relative expression levels of seven candidate genes by feather type and morph. Normalised inverse Cq-scores are shown for seven candidate genes after normalisation relative to Clock. These results are based on the analysis of 20 samples within a GLM framework (see Methods for details). a mean ± SE expression levels of the seven genes in dorsal and ventral feathers; b mean ± SE expression levels of the seven genes in the dorsal and ventral feathers of the three colour morphs