根据如图用生物进化理论来解释有关问题.1从图中可以看出不同的鸡具有共同的祖先 .2鸡的新品种的形成是由于原鸡在不同的 的条件下产生了 Template




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tomski根据如图用生物进化理论来解释有关问题.1从图中可以看出不同的鸡具有共同的祖先 .2鸡的新品种的形成是由于原鸡在不同的 的条件下产生了 coloring