how to dna test hair?
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Answered by
2
Forensic analysis of hair samples in order to
extract DNA is a method commonly used for
the purpose of identification in both criminal
investigations as well as parental DNA testing.
It is in many ways, however, the most
overestimated and misrepresented DNA
sample. People often assume hair samples
make ideal samples for DNA testing. This
notion might perhaps be due to the way hair
samples are so often seen collected in
detective crime fiction series and how solving
the crime invariably hinges on finding such a
sample. Nevertheless, whilst hair samples can
be accurately used for the identification of the
perpetrator, the extraction of DNA from the
aforementioned sample and its inherent
success depends very much on the part of the
hair at hand. To better understand the
complexities and challenges of carrying out a
DNA test on hair, it is mandatory to analyze its
structure and composition. One also needs to
understand the limited distribution of DNA in
the hair as well as the type of DNA available
in a given part of the hair (nuclear or
mitochondrial DNA).
extract DNA is a method commonly used for
the purpose of identification in both criminal
investigations as well as parental DNA testing.
It is in many ways, however, the most
overestimated and misrepresented DNA
sample. People often assume hair samples
make ideal samples for DNA testing. This
notion might perhaps be due to the way hair
samples are so often seen collected in
detective crime fiction series and how solving
the crime invariably hinges on finding such a
sample. Nevertheless, whilst hair samples can
be accurately used for the identification of the
perpetrator, the extraction of DNA from the
aforementioned sample and its inherent
success depends very much on the part of the
hair at hand. To better understand the
complexities and challenges of carrying out a
DNA test on hair, it is mandatory to analyze its
structure and composition. One also needs to
understand the limited distribution of DNA in
the hair as well as the type of DNA available
in a given part of the hair (nuclear or
mitochondrial DNA).
Answered by
2
Hair that is cut or shed does not unfortunately contain any nuclear DNA. For hair DNA testing to be successful the hairs must have the hair follicle attached. Most serious and responsible DNA testing companies will discourage strongly using a sample of cut or shed hair for paternity testing and most other tests.
hope it helps
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