By focusing only on genes, Blumberg argues in Freaks of Nature, we miss out on everything developmental anomalies can teach us about biological form and behavior.
This novel pathway marks an advance in our understanding of how developmentalgenes are turned on and off.
这个新的信号途径，标志者我们理解发育基因是如何开启和关闭的有了更大的进步。
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So the emergence of the evolutionary developmental biology makes it possible to study the origin and evolution of animals, as well as the origin and evolution of certain regulatory genes.