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]
Which of the following statems71.jpva,z,p vcvhe/11 9wxcgc hwckrsb4 ,,e+p kqcz i t)kfv3g6-3xxqf a*u7h/*p-e9grmbnts is the correct definition of evolution?
A. Heritable characteristics of a species change over time.
B. Organisms are reproductively isolated.
C. Learned behaviours change over time.
D. Organisms are bred for desired characteristics.
参考答案: A
本题详细解析:
Evolution is the change in the characteristics of a population over time; these characteristics can be passed from one generation to another (Choice A). Choice B is incorrect as it describes when organisms are reproductively isolated, which is a mechanism that may lead to evolution in a population. Choice C is incorrect because it refers to learned behaviours which are learned within an organism’s lifetime and are not genetically inherited. Choice D is incorrect as it refers to selective breeding.
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