Figure 7From: Convergent evolution of cysteine-rich proteins in feathers and hairScenario for the evolution of cysteine-rich proteins, feathers and hair. The putative origins of the epidermal differentiation complex (EDC), the subperiderm, avian and lizard EDCRPs as well as KRTAPs are indicated by vertical arrows on a schematic phylogenetic tree of vertebrates.Back to article page