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What specific biological evidence from a crime scene can be used to determine the approximate time of death?
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- Adequately describe how the collection and analysis of evidence in this cases helped the police in apprehending the assailants?Rigor mortis, algor mortis, and livor mortis are characteristics that help the examiner determine an approximate: Group of answer choices Cause of Death Manner of Death Time of Death Mechanism of Death1) A forensic scientist is required to collect blood samples from the crime scene and analyze it to help the investigators understand who participated to the murder. i) As a first step, the scientist needs to extract DNA. Indicate why red blood cells are not a good target for the analysis, and list at least two chemicals/compounds that are required to extract the DNA, explaining why they are used. ii) The sample has been collected in a small amount, so that (s)he decides to use PCR to analyze it. Describe why PCR is better suited to address small samples with respect to Southern blotting and how is selectivity addressed with this technique.
- Immediately upon seeing the body at the scene, the investigators knew that this was not a recent homicide. True False1) Would it be an issue if the sample gathered off the crime victim’s clothes was a blood sample versus the suspect’s sample being hair strands?Numerous red-colored fibers from a sexual assault crime scene are delivered to the crime lab along with red fibers from the suspect’s clothing. What instrument should the trace analyst use to view the fibers and obtain chemical information that could be used to compare the crime-scene and clothing samples
- Which of these methods are allowed to make a corpse presentable for pre-cremation identification purposes when no authorization for invasive techniques has been given? use a musculature suture to close mouth aspirate abdomen with no fluid injected to reduce gas pressure use a phenol surface pack to eliminate post mortem lividity place a small rolled towel under the chin to keep the mouth closedWhat type of forensic evidence did Richard Ramirez behind at the scene of his crimes? After reading about his crimes, did you expect to find more or less evidence left behind by Ramirez?Examine the results above and determine: Whether both women were, in fact, assaulted by the same man. Which, if any, of the accused is involved in the crime.