By ANDREW POLLACK
Published: August 17, 2009

Scientists in Israel have demonstrated that it is possible to fabricate DNA evidence, undermining the credibility of what has been considered the gold standard of proof in criminal cases.

The scientists fabricated blood and saliva samples containing DNA from a person other than the donor of the blood and saliva. They also showed that if they had access to a DNA profile in a database, they could construct a sample of DNA to match that profile without obtaining any tissue from that person.

“You can just engineer a crime scene,” said Dan Frumkin, lead author of the paper, which has been published online by the journal Forensic Science International: Genetics. “Any biology undergraduate could perform this.”

Dr. Frumkin is a founder of Nucleix, a company based in Tel Aviv that has developed a test to distinguish real DNA samples from fake ones that it hopes to sell to forensics laboratories.

The planting of fabricated DNA evidence at a crime scene is only one implication of the findings. A potential invasion of personal privacy is another.

Using some of the same techniques, it may be possible to scavenge anyone’s DNA from a discarded drinking cup or cigarette butt and turn it into a saliva sample that could be submitted to a genetic testing company that measures ancestry or the risk of getting various diseases. Celebrities might have to fear “genetic paparazzi,” said Gail H. Javitt of the Genetics and Public Policy Center at Johns Hopkins University.

Tania Simoncelli, science adviser to the American Civil Liberties Union, said the findings were worrisome.

“DNA is a lot easier to plant at a crime scene than fingerprints,” she said. “We’re creating a criminal justice system that is increasingly relying on this technology.”

John M. Butler, leader of the human identity testing project at the National Institute of Standards and Technology, said he was “impressed at how well they were able to fabricate the fake DNA profiles.” However, he added, “I think your average criminal wouldn’t be able to do something like that.”

The scientists fabricated DNA samples two ways. One required a real, if tiny, DNA sample, perhaps from a strand of hair or drinking cup. They amplified the tiny sample into a large quantity of DNA using a standard technique called whole genome amplification.

Of course, a drinking cup or piece of hair might itself be left at a crime scene to frame someone, but blood or saliva may be more believable.

The authors of the paper took blood from a woman and centrifuged it to remove the white cells, which contain DNA. To the remaining red cells they added DNA that had been amplified from a man’s hair.

Since red cells do not contain DNA, all of the genetic material in the blood sample was from the man. The authors sent it to a leading American forensics laboratory, which analyzed it as if it were a normal sample of a man’s blood.

The other technique relied on DNA profiles, stored in law enforcement databases as a series of numbers and letters corresponding to variations at 13 spots in a person’s genome.

From a pooled sample of many people’s DNA, the scientists cloned tiny DNA snippets representing the common variants at each spot, creating a library of such snippets. To prepare a DNA sample matching any profile, they just mixed the proper snippets together. They said that a library of 425 different DNA snippets would be enough to cover every conceivable profile.

Nucleix’s test to tell if a sample has been fabricated relies on the fact that amplified DNA — which would be used in either deception — is not methylated, meaning it lacks certain molecules that are attached to the DNA at specific points, usually to inactivate genes.

http://www.nytimes.com/2009/08/18/science/18dna.html?_r=1&partn...

Views: 104

Reply to This

Replies to This Discussion

This a huge news story, WOW. Thanks Tara!
I always suspected it was possible to do this.
Sorry Tar i never knew you bogged this
Yeah I saw this. Interesting.

RSS

"Destroying the New World Order"

TOP CONTENT THIS WEEK

THANK YOU FOR SUPPORTING THE SITE!

mobile page

12160.info/m

12160 Administrators

 

Latest Activity

tjdavis posted a photo
56 minutes ago
Doc Vega commented on Doc Vega's blog post Americans You’re Being Squeezed Out!
"Cheeki kea always nice to her you chime in and you're damn right! "
15 hours ago
Doc Vega commented on Doc Vega's blog post Americans You’re Being Squeezed Out!
"Les Prone thanks for your support Dude! "
15 hours ago
Doc Vega posted blog posts
15 hours ago
Doc Vega posted a photo

The inconvenient truth

Trump spells it out!
19 hours ago
Sandy posted a photo
yesterday
Less Prone favorited Doc Vega's blog post What Made the Founding Fathers of America so Brilliant?
yesterday
Less Prone commented on Doc Vega's blog post Why didn't the Archeological World Announce Proof that Jesus Lived?
"Motives of Joe, to shit in the well by showing totally irrelevant proof?"
yesterday
Doc Vega commented on Doc Vega's blog post Why didn't the Archeological World Announce Proof that Jesus Lived?
"Less, Motives of Wyatt or Joe? What archeologist wouldn't want proof of Jesus as part of his…"
yesterday
Doc Vega commented on Doc Vega's blog post Why didn't the Archeological World Announce Proof that Jesus Lived?
"Less Prone, Considering Joe Rogan to be the gatekeeper of anything is just short of ridiculous the…"
yesterday
MAC posted a video

Don't Go To Hong Kong Now (Even on Connecting Flights)

Secure your privacy with Surfshark! Enter coupon code laowhy86 for an extra 3 months free at https://Surfshark.deals/laowhy86Article 23 in Hong Kong is real,...
yesterday
cheeki kea commented on cheeki kea's video
Thumbnail

Terrorist Attack on Moscow - Ukraine Committing Suicide? | Larry C. Johnson

"...And I guess I'll just park this you tube here also for something to ponder from last year.…"
Tuesday
tjdavis posted photos
Tuesday
Less Prone posted a video

Climate: The Movie (The Cold Truth) NL

Deze nieuwe documentaire van de Britse filmmaker Martin Durkin toont aan dat klimaatalarm een verzonnen doembeeld is zonder enige wetenschappelijke basis. He...
Monday
Less Prone commented on Doc Vega's blog post Why didn't the Archeological World Announce Proof that Jesus Lived?
"It can be true, but why isn't he offering real evidence? What are his motives?"
Monday
Less Prone favorited Doc Vega's blog post Americans You’re Being Squeezed Out!
Monday
cheeki kea favorited Less Prone's blog post Going against the stream of lies and death
Monday
cheeki kea commented on Doc Vega's blog post Americans You’re Being Squeezed Out!
"You're spot on in regards to the the real estate component of this mass migrant mess Doc V and…"
Monday
cheeki kea commented on cheeki kea's video
Thumbnail

Terrorist Attack on Moscow - Ukraine Committing Suicide? | Larry C. Johnson

"This video out 2 days ago but the 4 terrorists already caught and 11 others involved identified…"
Monday
cheeki kea posted a video

Terrorist Attack on Moscow - Ukraine Committing Suicide? | Larry C. Johnson

Larry C. Johnson is a veteran of the CIA and the State Department’s Office of Counter Terrorism. He is the founder and managing partner of BERG Associates, w...
Monday

© 2024   Created by truth.   Powered by

Badges  |  Report an Issue  |  Terms of Service

content and site copyright 12160.info 2007-2019 - all rights reserved. unless otherwise noted