forensic analysis

 

• A suspect has been found miles from the scene of a murder. Soil is found adhering to the suspect’s shoe. Describe the proper collection and preservation of soil evidence that will permit a thorough comparison of the soil on the shoe to soil at the crime site. Include the process the laboratory will use for their analysis and explain how the forensic scientist will testify to their results. 
• Describe the process of comparing two fibers via microscopic and analytical methods. What morphological characteristics should a criminalist compare in these steps?
• During a microscopic comparison of two hairs, a trace analyst compares the medullae of the hairs to determine species of origin. What is the difference between the medullae of human and animal hairs? Name one exception to this among humans that may help in these determinations.

10 pages