forensic dna

...he discovery motion: a) Lab accreditation – ASCLD internal documents in which the lab’s accreditation is based b) Copy of Floor Plan and layout of DNA section of GBI Crime Laboratory c) Lab’s Protocol Manual d) Laboratory Proficiency test results, including open and blind tests, internally and externally administered and names of all individuals responsible for setting up and analyzing results. e) Validation Studies, peer review f) Laboratory Error Rates g) Technician or any person involved in conducting or reviewing DNA tests performed: i. Current resume ii. Job description iii. Document of training iv. Document of periodic review of work performance v. Summery of proficiency test results vi. Technician’s CV vii. Technician’s bench notes 2) Lacking Scientific Procedures The FBI manuals state that the DNA extraction of questioned samples be performed at a separate time from the DNA extraction of the known samples. This helps prevent potential cross contamination between the evidence samples and the reference samples. However, the forensic examiner failed to initial at the sentence that states “ Questioned samples are processed before and separate from known samples”. From the data, we can observe that the reference and evidence samples were run together. Shown on the “Dilutions for Amplication” and in the “310 Sample Grid”. The possibility of cross contamination of evidence samples and reference samples may be arguable in court. In addition, storage condition (is it kept from intermingling with other evidence samples?), storage temperature (of DNA) and expiration dates of reagents were not provided, thu...

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