10ofRods
Verified Anthropologist
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After reading the State's court docs re Protective Order I agree that the snp profile was developed at a private lab, not the ISL, and that development of the snp profile required an actual sample of the dna from sheath button.
"The Idaho State Police utilized a private laboratory to develop a SNP profile from the DNA on the KaBar knife sheath. The private laboratory started using genetic genealogy to develop a family tree, but after law enforcement decided the FBI
would take over, the private laboratory ceased its efforts and sent the SNP profile
to the FBI."
So the FBI used this SNP profile in its IGG work,Imo. The private lab sent the snp profile to the FBI. Assuming this profile is in computerised form. But the private lab required the dna sample to first develop the snp profile is my reading.Moo
Regarding what the Protective Order seeks to protect,in addition to the fbi's work stemming from the snp profile there is this:
" The raw data related to the SNP profile and the underlying laboratory
documentation related to the development of the profile, such as chain of
custody forms, laboratory standard operating procedures, analyst notes,
etc..."
However, further on:
"There were two types of scientific tests conducted with respect to DNA that fall
within the purview of Rule l6(b)(5). "
"First, law enforcement used STR DNA analyses to compare the DNA on the
KaBar knife sheath to Defendant’s father and then to Defendant. As required by Rule l6(b)(5), the State has provided the reports from those scientific tests.The
State also provided other information related to the STR DNA analyses because
the State plans on using that information at trial. See, e.g., I.C.R. l6(b)(4). "
"Second, the private laboratory developed the SNP profile from the DNA on
the KaBar knife sheath. As requiredby Rule l6(b)(5), the State will
produce the report that documents that DNA test. Rule l6(b)(5) does not
require the State to disclose how the SNP profile was used..."
So the State is saying, Imo, that the report documenting the dna test performed to produce the snp sample is discoverable, however the revelation/naming of the lab where the snp profile was devloped is not, Imo.
Above excerpts all from
Affidavit by Rylene Nowlin confirms that the ISL does not do snp analysis from dna samples:
"8. I affirm the ISPFS laboratory does not perform single nucleotide polymorphism
(SNP) analysis. SNPs are single sequence variations in the DNA at specific
points.SNPs are not as highly variable between individuals as STRs and can be
used in ancestry studies.
9. I affirm STR data and SNP data cannot be directly compared."
I'm still not following. Which part of this states that authorities in Idaho had to send actual organic material (DNA) to Texas (as opposed to the usual Othram method of running SNP profiles off of DNA results in digital files?)
There's no way to do SNP analysis without the exceptionally long (600-800,000 SNP's) file in a computer. The organic matter only needs to be run once (although typically, crime labs run 5-10 samples from a use point such as a sheath snap). We have heard nothing about whether any other part of the sheath was tested.
If the Defense were asking to have the sheath re-tested, I would get that. But that's not what I understand their objection to be. I believe they want to challenge the entire idea of using SNP profiles to establish identity of a specific human (which would overturn thousands of convictions across the US, all by itself).
IMO.