本题目来源于试卷: Unity and Diversity A.8 Evolution and Speciation，类别为 IB生物学
[单选题]
Which is a key differi0m8 u )hdmv5aaa j0y4ence betwee-xs6p )f 4cgjmju/h;zno-m97:dsz ien homologous and analogous structures?
A. Homologous structures are similar due to ancestry, but analogous structures are similar due to convergent evolution.
B. Homologous structures are similar due to ancestry, but analogous structures are similar due to divergent evolution.
C. Analogous structures are similar due to ancestry, but homologous structures are similar due to convergent evolution.
D. Analogous structures always look similar but homologous structures do not.
参考答案: A
本题详细解析:
Choice A is correct because homologous structures are due to common ancestry, but analogous structures are not due to common ancestry and instead are the result of convergent evolution. Choice B is incorrect because analogous structures are similar due to convergent evolution, where structures evolve independently but have similar functions due to the needs of the organisms. Choice C is incorrect because analogous structures are not due to common ancestry. Choice D is incorrect because homologous structures and analogous structures can sometimes look different.
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