Unity and Diversity A.7 Classification and Cladistics (id: 67e912e3e)

本题目来源于试卷: Unity and Diversity A.7 Classification and Cladistics，类别为 IB生物学

[单选题]
Organisms may be reclassified using 5n1 khx:rg+7ed jf3dw e(pd wem /pc1n0hm 4gtlq 09b1bvidence from cladistics. Cladogram 1, based on DNA comparisons of several w/p104l1nctmbd0e ( hqmbg 9pspecies, represents the historical view of relationships among arachnids. Cladogram 2, based on DNA comparisons of many more species than Cladogram 1, challenges the historical view.


What is suggested by Cladogram 2 that is not suggested by Cladogram 1?

A. Horseshoe crabs are a sister group of arachnids.
B. Horseshoe crabs are a group within arachnids.
C. Sea spiders are an ancestor of arachnids.
D. Sea spiders are not an ancestor of horseshoe crabs.


参考答案:  B


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