回答有关生物进化的问题鸟类与爬行类具有亲缘关系下图ab分别为鸟类和爬行类的早期胚胎1下图中两者的相似之处是都有 填图中编号与对应的 Template




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tomski回答有关生物进化的问题鸟类与爬行类具有亲缘关系下图ab分别为鸟类和爬行类的早期胚胎1下图中两者的相似之处是都有 填图中编号与对应的 coloring