Some people believe that using a DNA fingerpri
问题详情
Some people believe that using a DNA fingerprint may not be so reliable because___________
A. the accuracy of DNA fingerprinting has been challenged
B. no private laboratory follows uniform. testing standards or quality controls
C. mistakes are possible when researchers explain the results of their tests
D. suspects may not have enough money to provide their own DNA to law-courts请帮忙给出正确答案和分析，谢谢！
参考答案
正确答案：C
题意：有些人认为使用DNA指纹可能不那么可靠，因为……。
根据文章第四段The accuracy…challenged…First…In addition…Also…可知，DNA指纹的精确性受到挑战。首先，由于是DNA片段而并非完整的DNA被作为指纹进行检测，所以这样的DNA指纹可能并非独一无二。此外，DNA指纹常是在私人实验室作的，可能会存在不遵循统一的测试标准与质量控制的情形。再者，存在人为的失误导致错误的结果的可能。所以C项正确。B项内容太绝对，A项内容重复了题干的内容。第五段第二句Suspects who are unable to provide their own DNA…提到不能提供DNA样本的嫌疑人可能会受到不公正的待遇，但这不是DNA指纹准确性被质疑的原因。故本题选C。
