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Q: DNA question ( No Answer,   3 Comments )
Subject: DNA question
Category: Science > Biology
Asked by: 911_researcher-ga
List Price: $2.50
Posted: 07 Aug 2003 19:59 PDT
Expires: 06 Sep 2003 19:59 PDT
Question ID: 241255
At what temperature does DNA become unusable for identifying people?

Clarification of Question by 911_researcher-ga on 08 Aug 2003 07:11 PDT
Dead people I mean. Like what temperature would a corpse have to be
burnt at for them to be completely unidentifiable
There is no answer at this time.

Subject: Re: DNA question
From: afzh-ga on 08 Aug 2003 07:41 PDT
Very strange question...

For the DNA to be completely destroyed (covalent bonds broken), a
temperature of at least 400C would be required.

I arrived at the temperature by using the info on this page. The
temperature provided is more of an approximation than anything else.

On a side note, if you leave the corpse alone for long enough, the DNA
will be naturally decomposed.
Subject: Re: DNA question
From: knowledge_seeker-ga on 08 Aug 2003 09:27 PDT
REALLY long .....

Neanderthal DNA Sequencing

Subject: Re: DNA question
From: aceresearcher-ga on 08 Aug 2003 15:48 PDT
Greetings, 911_researcher!

As I am fond of reading about forensic pathology, I want to mention
that I have read that when a human has been dead for decades or even
centuries, or when a body has been reduced mostly to crumbling bone
and ash due to a conflagration of extremely high temperatures, in
certain exceptional circumstances scientists have still been able to
extract viable DNA from the pulp deep in a surviving tooth.

I hope that you find this information helpful.



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