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A211Exercise1 - A211 Name EXERCISE ONE Solving Crime with...

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A211 Name _________________ EXERCISE ONE: Solving Crime with CODIS Markers Described here are FICTIONAL cases, although based on some facts. Please read the cases and examine the provided evidence, and use this information, as well as that from your class activities and lectures and course readings to answer the exercise questions. To complete this exercise, you will need a scientific calculator, as well as the tables on CODIS marker population frequencies provided in the class activity from Tuesday, May 17 th . Although your class activities have been performed in groups, this exercise must be completed by you alone, without help from your classmates . Working together is prohibited and is considered cheating. This exercise is worth a total of 50 points toward your final course grade. Due IN CLASS, Monday, May 23 rd . Feel free to type your answers, and attach them as additional pages, especially if you have messy handwriting. But, PLEASE SHOW ALL OF YOUR MATH . Case ONE Background: Attracted by the incessant barking of a dog, Los Angeles neighbors of Janice Black Flanders were horrified to find two bloodied bodies in the courtyard of her house – Janice herself, and a man who later turned out to be an acquaintance, Mack Silverman, a trainer at Janice’s gym who had stopped by to return an iPod that Janice had left there the day before. Police were called, and shortly thereafter a forensic evidence collection team arrived. It was determined that both victims had been stabbed to death, with Janice stabbed at least four times with additional cuts and bruises to her hands, suffering from a concussion due to a blow to the head, and with her throat finally cut from behind. Mack was stabbed more than seven times and his throat was subsequently cut with multiple superficial parallel wounds and finally a deep gash. It has been concluded that all of these wounds could have been inflicted by a single knife. Evidence at the scene as well as documentation of prior domestic abuse led the police to suspect Janice’s ex- husband, a retired professional basketball player named ‘Tang’ Flanders, in these murders. When they talked to him, they noted that he had recently cut his hand on something (he claimed it was on a broken drinking glass). Both Janice and Mack were Caucasians, while Tang is African American. After assessing the evidence, the police have charged Tang with the murders of both Janice and Mack and have brought him to trial. You are a forensic DNA expert that a local TV station has hired to assess the results from the DNA data collected. Results from analyses of evidence that you will examine include blood from the crime scene, as well as samples from Tang’s SUV and some clothing found on his property. You also have data from reference samples from Tang, Janice and Mack. The TV station has obtained copies of the actual lab reports from the LA County forensic DNA laboratory, which you have been able to study.
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