Before doing this lab, I knew what the different blood types were: A, B, AB, and O. However, I never knew what these meant or why they were different. It’s all based on the DNA found on the red blood cells. A and B are the two types of proteins and a person can have … Continue reading Blood Stains at the Crime Scene
Tag: S3
Hair Evidence Lab
The analysis of hair is a very useful tool for forensics. Any remaining hair can be studied and one can determine the type of animal it came from. In this lab we compared dog, cat, and human hair. The dog hair tended to be thicker and had diagonal lines going down the hair. The cat … Continue reading Hair Evidence Lab
Fabric Lab
In this lab, we looked at the differences between wool, cotton, rayon, nylon, and polyester. We first looked at each fabric under the microscope and observed their weave pattern and filament count. We did not see much of a trend in their weave patterns, but we did notice that the natural fabrics tended to have … Continue reading Fabric Lab