کد مقاله کد نشریه سال انتشار مقاله انگلیسی ترجمه فارسی نسخه تمام متن
103492 161383 2015 10 صفحه PDF سفارش دهید دانلود رایگان
عنوان انگلیسی مقاله ISI
The complexities of DNA transfer during a social setting
ترجمه فارسی عنوان
پیچیدگی های انتقال DNA در یک محیط اجتماعی
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تولید محتوا
با 10 درصد تخفیف ویژه دانشیاری
کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه شیمی شیمی آنالیزی یا شیمی تجزیه
چکیده انگلیسی


• Simple social interactions can lead to detectable DNA deposit and transfer.
• DNA is deposited and transferred by touch and contact between objects.
• DNA can be transferred among individuals and objects without contacting each other.
• Not all contacts lead to primary deposit or further transfer of detectable DNA.
• DNA transfer can be bi-directional.

When questions relating to how a touch DNA sample from a specific individual got to where it was sampled from, one has limited data available to provide an assessment on the likelihood of specific transfer events within a proposed scenario. This data is mainly related to the impact of some key variables affecting transfer that are derived from structured experiments. Here we consider the effects of unstructured social interactions on the transfer of touch DNA. Unscripted social exchanges of three individuals having a drink together while sitting at a table were video recorded and DNA samples were collected and profiled from all relevant items touched during each sitting. Attempts were made to analyze when and how DNA was transferred from one object to another. The analyses demonstrate that simple minor everyday interactions involving only a few items in some instances lead to detectable DNA being transferred among individuals and objects without them having contacted each other through secondary and further transfer. Transfer was also observed to be bi-directional. Furthermore, DNA of unknown source on hands or objects can be transferred and interfere with the interpretation of profiles generated from targeted touched surfaces. This study provides further insight into the transfer of DNA that may be useful when considering the likelihood of alternate scenarios of how a DNA sample got to where it was found.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Legal Medicine - Volume 17, Issue 2, March 2015, Pages 82–91
نویسندگان
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