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Handle an open flame source with great care. Fibers will ignite suddenly and burn quickly at a very high temperature. Use something that will not conduct heat (forceps are metal and should not be used to hold onto something that is burning) to hold samples in the flame. Wear protective  goggles when flame-testing fabrics. Inhaling […]

1. Which car fibers were matched with those found on the victim? 2. Why were fibers from the victim’s car examined? 3. In your analysis, what characteristics make it difficult to distinguish cotton from rayon?

These assigment explores diversity and its impact on the world around us. Therefore discuss how Diversity influences society, and society influences diversity, creating a feedback loop between them. Diversity and its impact on the world:Society influences diversity This course explores diversity and its impact on the world around us. Diversity influences society, and society influences

They quickly bagged all of the plants and got rid of the indoor lights an hour before the police arrived. The police had a warrant to search the premises. No plants or grow lights were visible. The occupants denied growing marijuana. With no visible evidence of the plants, the police decided to look for trace

The parade of people coming and going into their apartment in the late evening hours also made the neighbors suspicious that the students were not only growing marijuana, but selling it too! The police were notified. The police were going to make a surprise visit to the home, arrest the occupants, and confiscate the drugs.

1. Did the class percentage agree with the value given by experts (yes or no)? Explain your answer using data for support. 2. Describe how to improve this data-collecting activity so that your results might be more reliable.

Explain about pollen evidence and this case: a. Was any marijuana pollen found in this apartment? b. How was it collected? c. How was the pollen examined in the lab? d. How do you know this pollen is definitely from marijuana plants?

The occupants just assumed it was dust from a lack of cleaning. The police sent the trace evidence of pollen to the crime lab. As expected, the dust was identified as marijuana pollen. The amount of pollen in the room indicated that many plants had been present.

1. What are the advantages of STR fingerprinting over VNTR fingerprinting? 2. What causes the difference between different STR alleles? 3. Explain the difference between using DNA profiles to determine paternity and to match a tissue sample with a suspect.

1. Match the latent crime scene print to one of the suspect’s fingerprints. 2. Justify your match by identifying the fingerprint pattern along with as many fingerprint minutiae found in both the crime scene print and the suspect’s fingerprint. 3. Circle the common minutiae points on both the crime scene print and the suspect’s fingerprint.