Unformatted text preview: passed through the gel. Negatively charge DNA fragments move to the anode end and positively charged DNA fragments travel to the positively charge end. Since every person on the planet has their own unique sample of DNA, the way the bands are arranged on the agarose gel become a unique “fingerprint” to that person. In terms of crime, a DNA sample at a crime scene can be used to identify a suspect as the perpetrator since everyone’s DNA is unique. Gathering Crime Scene Evidence 1. Once the crime scene has been cleared, proceed to collect the biological evidence. Biological evidence includes bodily fluids, blood, and hair. For this gel electrophoresis, hair samples will be used. 2. Hair samples are picked up using tweezers and placed in labeled evidence bad 3. All hair samples are accounted for and delivered to the lab for the extraction of DNA samples....
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- Spring '07
- Electron, Electric charge, agarose gel, Introduction Gel electrophoresis