1.Unknown substance data table
2.fingerprint analysis
When taking finger print data it's important to know that there are three different types of finger prints. There is the the loop, which starts in either the bottom right or left corner. It extends to the center or the fingerprint and loops back to the beginning of the ridge. The Whirl often starts in both ends of the finger and spirals around into the center. The Third fingerprint type is the Arch. The arch starts on one side of the finger, it arches up to middle/top of the finger and falls back down to the other end of the finger. When Fingerprints are found at a crime scene they can be compared to potential suspects and used to help collect possible Evidence. Matching Fingerprints to different people is useful when looking for suspects and or witnesses.
When taking a latent fingerprint you want to take a clean microscope slide and place both thumbs firmly on the slide. Then remove your thumbs and lightly dust the slide with a brush. Place a piece of tape on the slide, press firmly on the slide to make sure it picks up the fingerprints. Remove the piece the tape and place on a piece of paper to see the print.
When finding hair at a crime scene the first step is to determine whether it is actual hair or if it is fiber. Fibers are often found in jackets, sweaters, blankets etc. It can be determine whether it is a fiber or not by looking to see if it has a medulla and a cuticle. The cuticle is the outside of the hair, it forms the edges of the hair. The medulla is a canal like structure of cells that flows through the center of the hair. Cuticles and medullas can be seen under a microscope and are found in hairs, not fibers. If it has been labeled as a hair next you want to know whether it's human or animal hair. This information can be found by looking at the root of the hair, DNA, if it has been artificially treated, length, etc.
3. HAir and fiber analysis (paragraph description above)
The hair found at the crime scene belongs to Anna Garcia. I know this because the two hairs, when placed under a microscope, have the same color and pattern. Both hairs have the same cuticle thickness and the medulla is easily seen in both.
Here is a photo of what my hair looks like under a microscope
4. SHOE-PRINTS
When exploring and analyzing the crime scene, a shoe print was found. The shoe print belongs to Anna Garcia. The shoes found on the body of Anna have the same pattern and print as the shoe mark found at the scene.
5. Blood Typing (Blood found at scene)
The Blood Type found at the Scene is B+. That means that the blood could belong to either Anna or Alex Garcia. I know this because the blood clumped in all the substances but the Anti B serum, therefore they have the Blood type B+.
6. Stride Analysis
When determining the approximate height of a suspect you can use footprints to gather this information. The larger the print, the taller the person is. You can look at the second graph above, and you will notice that typically the taller you are,the larger your foot will be. When calculating someones average stride, it's best to have someone take multiple steps, measure their distance from the starting point and then divide it by the number of steps they took. Someones stride distance can also give you an approximate height. The larger the stride, the taller and larger the person is. Someone you takes big steps typically has long legs making them tall.
7. Blood spatter lab
8. what is dna... Model lab
When collecting Blood at a crime scene it's important to identify who the blood belongs to. We do this by DNA Profiling. DNA is a large molecule whose information is organized as a chemical code. The basic structure of DNA is called a nucleotide. It is composed of a Deoxyribose sugar molecule, a phosphate group and a nitrogenous base (A T G C). DNA can be used to identify a person, and when found at a crime scene it can be used as evidence when looking for suspects.
9. Whose DNA is it?
DNA profiling is the process of testing DNA by cutting it into strips and letting it flow through gel electrophoresis. They take this data and compare it to the results of DNA found at a Crime Scene to see who it belongs to and to find potential suspects. The process of DNA Profiling is first Restriction Enzymes. This is where the DNA is cut based on its base pairs. After being cut by Restriction Enzymes, the DNA fragments are placed in wells of a jelly like substance. When given electricity the negativily charged DNA will flow at different paces through the gel based on the strand length (this process is called gel electrophoresis).
10. Was it a crime? - final report
11. Does anna have diabetes?
After running multiple tests it can be determined that Anna has Type 1 diabetes.
12. the human heart
After looking at Anna's Autopsy and looking through the information and images of her heart it can be determined that Anna Garcia has two heart conditions. She has left ventricle hypertrophy, meaning her left ventricle is too big which makes the heart over work. She also has mitral valve prolapse which means the blood pumps backwards through the heart, this is extremely dangerous for the body.