本题目来源于试卷: Continuity and Change D.10 Natural Selection，类别为 IB生物学
[单选题]
Which of the following is/are examplexp -mvbksy f90)l g.*r(s) os m7t,fv) 5o08cih x.zlzg; dtf selective breeding?
I. A puppy is taught to sit.
II. Cows that produce high volumes of milk have been crossed with cows that have large amounts of meat.
III.Development of antibiotic resistance in bacteria.
A. II only
B. I only
C. II and III only
D. I, II and III
参考答案: A
本题详细解析:
Crossing two individuals with desirable traits is an example of selective breeding, which relates to statement II. Statement I does not involve breeding or selecting desirable traits. Antibiotic resistance in bacteria (statement III) is not a desirable trait and is not selected by humans. Choice A is correct as statement II is the only statement which reflects selective breeding.
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