A. An experiment to discover the relationship between climate and genetic change
B. An experiment designed to analyze and measure evolutionary change
C. The discovery of a new species of deer mouse
D. Different theories that link genetic variation to physical appearance
我的笔记 编辑笔记
题型分类：主旨题
题干分析：讲座主旨。
原文定位：
Today, I want to discuss the changes that occur when some members of the species move into a new habitat……Let's look at an experiment that involved a species of deer mouse that lives in the sand hills of Nebraska.
选项分析：文章开头提到接下来要讲的是一个种群中的部分成员迁徙到新栖息地之后的变化，随后提到之前只能从生物的表现型层面上观察生物的演化，但现在可以在基因型层面上观察，并提到了一个实验，随后都在讲这个实验的细节，包括它如何分析和测量物种演化，可知应选B选项；A、C选项未提及；原文中只提到了关于表现型和基因型的一种假说，可知D选项错误。
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