以色列科學家展示DNA證據能被偽做

以色列科學家展示DNA證據能被偽做
Israeli Scientists Show DNA Evidence Can be Fabricated
Friday, January 29, 2010
by: David Gutierrez, staff writer

(NaturalNews) Scientists from the Tel Aviv, Israel-based company Nucleix have demonstrated that it is possible to create fake DNA samples and plant them as evidence at a crime scene, in a paper published in the journal Forensic Science: International Genetics.
（NaturalNews)在以色列特拉維夫為基地的公司Nucleix的科學家經已示範，它有可能創造假的DNA樣本和設置它們在犯罪現場作為證據，在一份法醫科學雜誌：國際遺傳學的文件中發表。

"You can just engineer a crime scene," said lead researcher and Nucleix co-founder Dan Frumkin. "Any biology undergraduate could perform this."

In addition to having developed a method of fabricating DNA evidence, Nucleix has also developed a method of detecting faked DNA that it plans to sell to forensics labs.
除已發展一種捏造DNA證據的方法，Nucleix還開發了一種方法檢測假冒的DNA，該公司計劃出售至法醫實驗室。
The scientists have developed two different ways to manufacture DNA samples in order to fool law enforcement. The first involves using DNA profiles from law enforcement databases, which record the code at 13 different spots on a person's genome. Using a pooled library of DNA samples from a number of different people, the geneticists were able to physically construct DNA that was identical to a suspect's DNA at those 13 points. It would take only 425 different DNA snippets to be able to construct every possible permutation, the researchers said.
科學家已經開發出兩種不同的方法，製造 DNA樣本以欺騙執法。第一種涉及使用來自執法數據庫的DNA圖譜，它在一個人的基因組上13個不同的點記錄代碼。使用累積圖書館來自多個不同的人的DNA樣本，遺傳學家能夠完全地構造DNA，與疑犯的DNA在那13點一致。這只要425種不同的DNA片段，以能夠建造各種可能的排列，研究人員說。
The second method involved collecting actual DNA from the person whose genetic material was to be faked, such as by collecting a strand of their hair or saliva from a cup they had used.
第二種方法涉及收集實際的DNA，由那人他的遺傳材料為偽造，如從一個他們用過的杯子蒐集他們的頭髮或唾液。
In both cases, the DNA was then reproduced in large quantities using a technique called whole genome amplification. This DNA was inserted into red blood cells, which were then passed off as a real DNA sample.
在這兩種情況，DNA會跟住被大量複製，使用一種技術稱為全基因組擴增。這種 DNA被插入到紅血細胞，然後它被冒充作為一個真正的DNA樣本。
A normal blood sample would contain both red and white blood cells, and the red blood cells would contain no DNA. In addition to this difference from a normal sample, amplified DNA lacks certain molecules contained by normal DNA. Forensics labs are unlikely to test for either of these anomalies without cause, however.

"DNA is a lot easier to plant at a crime scene than fingerprints," said Tania Simoncelli of the American Civil Liberties Union, in response to the study. "We're creating a criminal justice system that is increasingly relying on this technology."

The researchers warned that their techniques could also be used to replicate enough of a person's DNA to carry out genetic testing on them without their consent, thus violating their right to genetic privacy.

Sources for this story include: www.nytimes.com.

http://www.naturalnews.com/028052_DNA_evidence.html

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