2. 职称英语
  3. Before DNA fingerprinting is used, suspects ______. [br] To geneticists like Lew

Before DNA fingerprinting is used, suspects ______. [br] To geneticists like Lew

游客2023-08-31  45
问题 Before DNA fingerprinting is used, suspects ______. [br] To geneticists like Lewontin and Hartl, the current method ______.
选项 A、is not so convincing as to exclude the likelihood that two DNA samples can never come from two individuals
B、is beyond dispute because two individuals of the same ethnic group are likely to have the same DNA pattern
C、is not based on adequate scientific theory of genetics
D、is theoretically contradictory to what they have been studying
答案 A
解析 题干中的Lewontin和Hartl出现在文章第三段，在该段中这两位基因学家认为：出现两个相类似的DNA指纹的可能性还是存在的，目前的方法还不能确定相似的DNA指纹是否来自同一人。由此推断，基因学家Lewontin 和 Hartl认为，目前的方法无法排除两个DNA样品是否可能来自两个人的可能性，故选A。 B中所提到的目前的方法不可争议，是因为来自同一种族中两个个体很有可能有相同的DNA样品，这种说法过于肯定，不符合原文。C、D都不是这两位基因学家的看法。
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