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2008-07-21 Science & Technology
DNA ID May Not Be As Infallible As Imagined
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Posted by Anonymoose 2008-07-21 09:33|| || Front Page|| [11133 views ]  Top

#1 Damn right!
Posted by O.J. Simpson 2008-07-21 10:06||   2008-07-21 10:06|| Front Page Top

#2 Apparently, inbreeding was rampant in Arizona. Wait until they check the Ozarks and Appalachians.
Posted by Woozle Unusosing8053 2008-07-21 10:22||   2008-07-21 10:22|| Front Page Top

#3 unrelated people sharing those genetic markers to be as remote as 1 in 113 billion

And thats their error. In any population most people will be related to most other people.
Posted by phil_b 2008-07-21 10:37||   2008-07-21 10:37|| Front Page Top

#4 Or, people with criminal tendencies share common DNA profile markers. That'll open a can of 'we can't go there' from the usual crowd. Reviving the old notion of 'bad blood' isn't PC.
Posted by Procopius2k 2008-07-21 11:08||   2008-07-21 11:08|| Front Page Top

#5 I have no detailed knowledge of the tech but a 9 of 13 match does not seem to equate to a match to me. 13 of 13 would be a match. It seems to me that some lawyers are looking for an out for their clients.

I would appreciate if someone with real knowledge of the process would comment.
Posted by tipover 2008-07-21 11:24||   2008-07-21 11:24|| Front Page Top

#6 The good news is that science is testable. If Ms. Troyer is correct her work can be replicated by other labs. Perhaps there is something to this, perhaps not.  But even if the FBI is unhappy, the truth about genetic profiling will come out.
Posted by Steve White 2008-07-21 12:56||   2008-07-21 12:56|| Front Page Top

#7 The FBI should stay out of this and let Science take its course. One of the basic truths of DNA and genetics is there is still a LOT we don't understand. The beauty of Science is that it is continuously revising itself. Better to explore the possibility that she is correct than to find lingering questions casting doubt on DNA evidence in the future.
Posted by AllahHateMe 2008-07-21 13:28||   2008-07-21 13:28|| Front Page Top

#8 I would suspect that this is a similar problem to the partial fingerprint ruling from not too long ago. That is, the smaller number of points used, relative to the total data field, the higher chance of inaccuracy.

This makes all the sense in the world if you compare it to CAD software. Back when it was primitive, it used few data points to connect the lines, so round objects had a boxy or beveled appearance. But as the software got better, with more data points, rounded objects became smoother. Eventually, so many data points are used that round looks round.

I'm sure there will be more on this later.
Posted by Anonymoose 2008-07-21 14:02||   2008-07-21 14:02|| Front Page Top

#9 As I recall, DNA is generally used to exclude suspects, not to include them.
Posted by Iblis 2008-07-21 14:07||   2008-07-21 14:07|| Front Page Top

#10 "The beauty of Science is that it is continuously revising itself."

Except for Gerbil Wormening, AHM. AlBore says that's settled and there can be no dissenters.
Posted by Barbara Skolaut">Barbara Skolaut  2008-07-21 14:53|| http://ariellestjohndesigns.com/]">[http://ariellestjohndesigns.com/]  2008-07-21 14:53|| Front Page Top

#11 Is she related to Verne?
Posted by Nimble Spemble 2008-07-21 15:59||   2008-07-21 15:59|| Front Page Top

#12 Oh, oh, somebody been using conserved regions for DNA fingerprinting.
Posted by g(r)omgoru 2008-07-21 21:25||   2008-07-21 21:25|| Front Page Top

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