本题目来源于试卷: HL Topic A3.2 Classification and cladistics，类别为 IB生物学
[问答题]
5. The diagram below shows the evolutionary relationship between invertebrates.[img]data/attachment/exam/2501/24/2501241156488558.jpg[/img]Use an example from the diagram to explain the meaning of the following terms.
IV. Common ancestor
参考答案: A common ancestor is shown at each point where there is a node
This junction of lines represents the most recent ancestor that the two species have incommon. E.g. Insects and crustacea have an arthropod common ancestor.
本题详细解析:
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