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Transcripts for CNN Forensic Files 20150308 05:25:00

That had never been admitted into evidence in a pennsylvania trial, something called mitochondrial dna. traditional dna analyzing the nucleus of the cell. but outside the nucleus are mitochondria that can be identified although not as precisely as traditional dna testing. most hairs from crime scenes have very, very little amounts of dna. however, there is more mitochondrial dna, however there is more dna therefore in hairs obtained from crime scenes most of the time we can t obtain the dna convention where we would fail with neek leer analysis. to identify the dna sequence, a pcr test was conducted and the dna sequences from the blonde ....

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