Jenny & Dave Case Study With Forensic Scientist Performing & DNA Analysis - Nursing Assignment Help

Assignment Task

Part I. Case Synopsis
Jenny and her boyfriend Dave arrive back at their apartment after a night out and notice their front door is slightly ajar. Their dog is barking loudly and they hear a sound coming from the kitchen. Dave goes to the kitchen and observes an intruder with a baseball bat going through the cupboards. Dave grabs a kitchen knife and attacks the intruder and cuts the intruder’s hand. The intruder spits on Dave, hits him with the baseball bat and runs out of the kitchen. As he runs out the front door he pushes Jenny in the chest and drops the baseball bat. 

When the police arrive, Dave tells them the intruder was a male with brown hair. Dave mentions the spitting incident and the police collect his shirt. They observe that Dave’s arm is bruised and bleeding. They notice a pair of underwear and a bra on the living room floor with what appears to be some white staining and collect them as Jenny says she didn’t leave them there. The police collect Jenny’s shirt since the intruder pushed her. One investigator notices red staining on the kitchen floor and takes a swab of it. Swabs are also taken of the blade of the kitchen knife Dave says he used to stabs the intruder and the handle of the baseball bat that was left at the scene. In addition, swabs of the cupboard knobs that the intruder was seen going through are taken. Finally, a reference (comparison) sample was collected from Dave.   

Part I Questions 

• The forensic scientist performing the case assessment did not accept item 8 for DNA analysis. Explain the rationale. 
• Why is a reference sample from Dave required? Why is a reference sample from Jenny not needed?

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