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DNA Fingerprinting
1.题目：According to the essay， we can find chromosomes
答案：C） in a sheep.
2.题目：A） DNA fingerprinting is more often used for
答案：B） providing evidence in court investigations.
3.题目：When you brother looks exactly like you， your complete DNA may be
答案：A） exactly like his.
4.题目：Some people believe that using DNA fingerprint may not be so reliable because
答案：C） mistakes are possible when researchers explain the results of their tests.
5.题目：This essay talks about DNA fingerprinting concerning the following aspects EXCEPT
答案：D） possible danger in drawing a DNA sample from the human body.
速记口诀：
DNA指纹
1.绵羊也有染色体____________________
2.指纹证据谈得多____________________
3.外貌相同，DNA同____________________
4.指纹不可靠因错误____________________
5.DNA取样没危险____________________