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Full-Text Articles in Forensic Biology
Indirect Dna Transfer To Duct Tape Rolls Stored In Cars, Yuching Chung
Indirect Dna Transfer To Duct Tape Rolls Stored In Cars, Yuching Chung
Student Theses
This project investigated the accumulation of DNA on duct tape rolls stored in cars. Specifically, we analyzed samples recovered from three areas (the inside, outside, and flat sides) of unused duct tape stored under the driver's seat and trunk of cars for seven days. Twelve volunteers were recruited, resulting in 64 DNA samples from 12 cars. We evaluated DNA quantities and STR genotyping outcomes after amplification with the GlobalFiler™ kit. On average, the DNA yields from under the driver's seat were higher than from the trunk, but the difference was not significant. The inside of the tape roll yielded significantly …
Characterization Of Dna Background On Duct Tape Stored In Domestic Environments, Elaan A. Lukasiewicz
Characterization Of Dna Background On Duct Tape Stored In Domestic Environments, Elaan A. Lukasiewicz
Student Theses
With lower detection limits for forensic DNA analysis, it is important to have a better understanding of background DNA levels unrelated to the crime to facilitate accurate data interpretation. Duct tape is used in crimes, e.g. to bind victims and seal drug packaging, and may be tested for DNA. To determine DNA background levels, twelve volunteers were recruited to donate a used roll of duct tape from their home. The duct tape was divided into three areas: inside, outside, and sides of the roll, and swabbed for DNA. The average concentration of DNA was determined for the inside (0.0723 ng/µL …
Passive Dna Transfer To Fidget Blasters Stored In Cars, Rachel Chan
Passive Dna Transfer To Fidget Blasters Stored In Cars, Rachel Chan
Student Theses
This study evaluated the amount of detectable DNA accumulated on clean plastic fidget blasters, used to simulate firearms, over a seven-day storage period inside a vehicle. Twelve volunteers were asked to place one fidget blaster each in the glove box and underneath the driver’s seat from behind. After the seven-day period, the volunteers returned the fidget blasters, donated a reference sample, and filled out a questionnaire. The grip, slide, and trigger were swabbed for DNA and extracted. The extracts were quantified to determine the concentration of human DNA, and if the samples met the PCR threshold to be genotyped. The …