Fig. 8

Results of the qPCR analysis showing the relative expression levels of seven melanogenesis-related genes in dorsal and ventral feathers. Normalised inverse Cq-scores (mean ± SE) are shown for seven candidate genes after normalisation relative to Clock (see Methods for details). These results are based on three common buzzard individuals for which both dorsal and ventral feather samples were available. Asterisks indicate significant differences between dorsal and ventral feathers for the respective gene