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4. Lt. Russ is investigating a murder scene. The felon was scratched by his victim & some of his skin cells were found under the victim's fingernails. A DNA test was performed. Which of the suspects is the murderer? felon S 1 S 2 S 3 || |||| | || | I|||| |L |||

4. Lt. Russ is investigating a murder scene. The felon was scratched by his victim & some of his skin cells were found under the victim's fingernails. A DNA test was performed. Which of the suspects is the murderer? felon S 1 S 2 S 3 || |||| | || | I|||| |L |||

Human Anatomy & Physiology (11th Edition)
Human Anatomy & Physiology (11th Edition)
11th Edition
ISBN:9780134580999
Author:Elaine N. Marieb, Katja N. Hoehn
Publisher:Elaine N. Marieb, Katja N. Hoehn
Chapter1: The Human Body: An Orientation
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Problem 1RQ: The correct sequence of levels forming the structural hierarchy is A. (a) organ, organ system,...
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**DNA Analysis in Crime Scene Investigation** **Problem 4:** Lt. Russ is investigating a murder scene. The felon was scratched by his victim, and some of his skin cells were found under the victim’s fingernails. A DNA test was performed. **Task:** Determine which of the suspects is the murderer by comparing DNA samples. The image shows a DNA analysis comparison chart with DNA bands from the felon, and three suspects labeled as S1, S2, and S3. **Description of the DNA Comparison Chart:** - **Column 1 (Felon):** This column shows the DNA bands obtained from the skin cells found under the victim’s fingernails. - **Column 2 (S1):** This column displays the DNA bands of Suspect 1. - **Column 3 (S2):** This column displays the DNA bands of Suspect 2. - **Column 4 (S3):** This column displays the DNA bands of Suspect 3. **Detailed Explanation of Comparison:** The task is to match the DNA bands from the felon to one of the suspects. The bands in each row should match exactly for the felon and one of the suspects to identify the murderer. - **Felon DNA Bands:** - First band: Wide - Second band: Narrow - Third band: Wide - Fourth band: Wide and Narrow - Fifth band: Narrow - **Suspect 1 (S1) DNA Bands:** - First band: Wide - Second band: Narrow - Third band: Wide - Fourth band: (none) - Fifth band: (none) - **Suspect 2 (S2) DNA Bands:** - First band: (none) - Second band: Wide - Third band: Wide - Fourth band: Narrow - Fifth band: Narrow - **Suspect 3 (S3) DNA Bands:** - First band: Wide - Second band: Narrow - Third band: Wide - Fourth band: Wide and Narrow - Fifth band: Narrow By comparing the bands, it is clear that the felon's DNA bands match those of Suspect 3 (S3). **Conclusion:** **Suspect 3 (S3)** is identified as the murderer based on the DNA analysis.
Transcribed Image Text:**DNA Analysis in Crime Scene Investigation** **Problem 4:** Lt. Russ is investigating a murder scene. The felon was scratched by his victim, and some of his skin cells were found under the victim’s fingernails. A DNA test was performed. **Task:** Determine which of the suspects is the murderer by comparing DNA samples. The image shows a DNA analysis comparison chart with DNA bands from the felon, and three suspects labeled as S1, S2, and S3. **Description of the DNA Comparison Chart:** - **Column 1 (Felon):** This column shows the DNA bands obtained from the skin cells found under the victim’s fingernails. - **Column 2 (S1):** This column displays the DNA bands of Suspect 1. - **Column 3 (S2):** This column displays the DNA bands of Suspect 2. - **Column 4 (S3):** This column displays the DNA bands of Suspect 3. **Detailed Explanation of Comparison:** The task is to match the DNA bands from the felon to one of the suspects. The bands in each row should match exactly for the felon and one of the suspects to identify the murderer. - **Felon DNA Bands:** - First band: Wide - Second band: Narrow - Third band: Wide - Fourth band: Wide and Narrow - Fifth band: Narrow - **Suspect 1 (S1) DNA Bands:** - First band: Wide - Second band: Narrow - Third band: Wide - Fourth band: (none) - Fifth band: (none) - **Suspect 2 (S2) DNA Bands:** - First band: (none) - Second band: Wide - Third band: Wide - Fourth band: Narrow - Fifth band: Narrow - **Suspect 3 (S3) DNA Bands:** - First band: Wide - Second band: Narrow - Third band: Wide - Fourth band: Wide and Narrow - Fifth band: Narrow By comparing the bands, it is clear that the felon's DNA bands match those of Suspect 3 (S3). **Conclusion:** **Suspect 3 (S3)** is identified as the murderer based on the DNA analysis.
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