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 statemen v2w5ybhg g/ls(zecf1p, p*5ets is the correct definition of evolutionnt so-be9 i79sv zrnzcld5jz4ek/2(4?
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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