47. The article is about _____________.
(A) what DNA is
(B) how to make DNA
(C) where to store DNA
(D) why fights DNA in the lab
(E) when to extract DNA

答案：登入後查看
統計： A(349), B(31), C(28), D(37), E(31) #1961068

詳解 (共 1 筆)

#3633752

II. A new form of identification辨認 relies on DNA, which carries the genetic information of each person.

Everyone’s DNA is different except除…之外 for identical極為相似 twins.

DNA profiling分析 or typing is sometimes called DNA fingerprinting because it allows police to identify an individual in the same way as fingerprints do.

DNA can be extracted提取 from any body fluid液體 or from fragments小塊 of a body.

Forensic法醫 scientists do not look at the whole of a person’s DNA sequence順序, but rather a sub-set子集 of a DNA profile描述.

DNA profiles are a very powerful means of determining whether two or more samples may or may not have come from the same person. 

If DNA profiles do not match, they came from different people. 

However, if they do match, there is still a very slight微小 chance that they may have come from different people.

DNA is the same in every cell of the body, and stays the same throughout自始至終 life.

As such, DNA profiles taken at different times and places can be compared in order to determine whether or not they come from the same person. (excerpted from Professional Police English by Central Police University Press, 2011)
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