Pigmentation patterns result from the local conversion of precursor metabolites into pigment deposits by several enzymes (Wittkopp et al., 2003). The expression patterns of these enzymes, generally specified at an advanced developmental stage when the overall morphology closely resembles the adult layout, are the blueprints of the visible pigmentation patterns (Wittkopp et al., 2002a). Therefore, understanding how the expression patterns of the genes encoding these enzymes are established and change among species is key to understanding the formation and diversification of pigmentation patterns.
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6 Emerging Principles of Regulatory Evolution--BENJAMIN PRUD'HOMME, NICOLAS GOMPEL, and SEAN B. CARROLL ."
In the Light of Evolution: Volume I: Adaptation and Complex Design . Washington, DC: The National Academies Press,
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