Another possible channel of evolution is gene duplications.
另外一个可能的基因进化过程则是基因的复制。
It made the evolution of the tractor possible, and led to sweeping changes in agriculture.
它使拖拉机的改进成为可能，并引领了农业的彻底变革。
So what made the evolution possible?
那么是什么让可能的演变？
Is it possible to find the Missing Links ever in human's evolution?
人类进化中的缺失环节有可能被找到吗？
Is it possible to find the Missing Links ever in human's evolution?
人类进化中的缺失环节有可能被找到吗？
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