Nor is a root actually necessary for DNA extraction from hairs that have no root.
From just one source which indicates the possibility ~
The cell contains two copies of nuclear DNA, but hundreds of copies of mitochondrial DNA, some of which remain intact even when the cell dies. Therefore, such a DNA sample may be extracted from a hair even if its root is not available.
How many types of DNA do we have, and why?When we talk about our genes – those inherited from our parents, those which determine our eye or hair color and numerous other traits, and those which we refer to when we say that something is "in our genes" – we are talking about the genetic material...
davidson.weizmann.ac.il
Forensic advances might even allow bacteria from pubic hair to identify rapists, for example ~ "Like fingerprints or DNA, the bacteria on a person’s pubic hairs are distinct and could help forensic experts identify sexual offenders in rape cases, according to a
study published Tuesday in the journal Investigative Genetics."
Forensic scientists are finding new ways to identify rape suspects based on their bacterial calling cards.
www.ibtimes.com
What I found interesting is the fact that CB claimed in his defence against aggravated rape, not that he had never been in DM's bed so he couldn't have left his hair there, but it was carried in from outside ~ the mind boggles. And the court did not believe him and put women in the Algarve out of harms way from him for seven years.
From the Scottish Daily Mail
"The court heard DNA linked a body hair found on the woman’s bed to CB, who was living less than a mile away from the woman.
He denied the attack, claiming the hair could have been transferred to the woman’s bed on the back of her cat after he petted it outside her house, which was on his way to the beach."
In court Brueckner was said to have come across as ‘eloquent’ and was seen leafing through legal texts as evidence was heard."
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