The question that I am planning on answering with this “Hair Identification Lab” is “how would you analyze hair?” If you analyze the hair under a lighted microscope, then you should be able to see most of the characteristics and distinguish them. Materials that were used during this “Hair Evidence Lab” included: a microscope, hand lens, tweezers, white paper, cover slips, and sliders. I took a tweezer to pull out a strand of my hair. I tried to pull out one that had a root on it. I then put my strand of hair on the white paper. I had to use white paper because my hair is black and dark. After putting my strand of hair on the white paper, I then put it on a slider. After that, I put the coverslip on top. I then proceded by looking at it on a microscope. I was given a “Hair Evidence Lab” paper, before even putting the microscope on any power. I had to look through the microscope to see what the root of my hair looked like. …show more content…
I decided that the root of my hair looked most like a teardrop. After that, I had to look through the microscope to see what the tip of my hair looked like. For Part A Section 2, I had options to choose from or I could write something in the “other” titled section. For Part B, I then viewed the shaft of my strand of hair on low, medium, and high power using the microscope. The shaft of the hair is the middle section of the hair. I then had to sketch what the shaft looked like on my “Hair Evidence Lab”
Just because a hair is found at the scene doesn’t mean that it belongs to the perpetrator. It is important to take Locard’s Principle into account, “The microscopic debris that cover our bodies are the mute witnesses... of all our movements and all our encounters.” (Robertson, 7.2) When you come into contact with something or someone, there is always a transfer, even if it isn’t noticeable. There are different types of transferring, primary and secondary. Primary transfer is when something transfers from you to another source. When someone comes into contact with that source, there is a chance that your hair or fiber transfers onto the other person. This is secondary transfer. Because humans shed hair frequently, it is easy for hair to go through secondary transfer and end up somewhere that the individual had never been. Hair can remain on a source for a couple hours without being transferred and it does not break down very easily, so this can remain in place for a long time. (Robertson,
the DNA from the roots of the hair. The replicated DNA samples were then placed into the
... tested hairs and other parts for DNA and concluded that they fit into our family tree. “ Those hair samples that could not be identified as known animal or human were subsequently screened using DNA testing, beginning with sequencing of mitochondrial DNA followed by sequencing nuclear DNA to determine where these individuals fit in the tree of life” (Ketchum 2013).
...ased on will either be answered or very close to being answered. When the original question is answered, maybe hair care products can be made to work for all hair textures. By discovering exactly why hair differs among ethnicities, society can see that one should not be judged based on their hair.
These hairs may be of evidentiary value to show contact between two people. With an adequate hair standard, a trace chemist will be able to microscopically compare an unknown hair to a standard collection and determine if the unknown hair could have come from the individual under investigation. Hair comparisons can not identify hair as coming from one individual to the exclusion of anyone else. DNA testing can strengthen any possible association with the hairs." - Locard.... ... middle of paper ... ...
To determine your type, you will need to find your hair size by comparing it to a strand of thread. How the thickness of your hair compares to the thread will determine if it is fine, medium or coarse. Select a single strand of hair and place it on a white piece of paper. You should do this after the hair has been washed and is void of any product to ensure a thorough classification. If you hair is thinner than the thread, than it is fine. If it is the same size, then it is medium, and if is thicker than the thread, then it is coarse.
...umerous microscopic studies of hairs from most animals. As a result, during one of the first lawful cases ever involving hairs, Rosella Rousseau was made confess to murder in 1910. In 1945, Frank Lunquist developed the acid phosphatase test for semen, which helps find the DNA of a possible criminal. In 1950, Max Frei-Sulzer developed the tape lift method of collecting trace evidence to make things such as hairs or fibers more portable for investigators. Lastly, in the 1960’s, Maurice Muller adapted the Ouchterlony antibody- antigen diffusion test for precipitin testing to determine species of different animal types, which relates to the feather testing done for trace evidence. In conclusion, all of these past history achievements of these individuals have made trace evidence today more convenient than it would be if none of these inventors put the dedication to it.
Mainstream critics of the study have been relying on their old standby “the samples were contaminated or not handled properly.” This claim is refuted throughout the paper beginning with the forensic washing of the hairs that even world renowned geneticist Dr. Bryan Sykes admits: “You can clean any suggestion of contamination from the surface of the hair without damaging the DNA that lies within. This is something we have only known in the past couple of years.”
Name each lock of hair by variables such as the right lock is a, the middle lock is b, and the left lock is c so it is easier to remember the pattern in the following instructions.
How important is your hair? I know I am attached to mine because simply getting my hair cut is usually an emotional ordeal. Now just imagine not having any or having patches of baldness. This is what people with alopecia have to endure daily. So let’s take a look at what hair is, what is alopecia, the different types of alopecia, causes, treatments, and we will look at alopecia areata more closely. No matter what, every person has to deal with hair and /or lack thereof.
Ever wondered about how to classify the different type of hair textures of types? The different hair types are labeled type 1, the straight texture; type 2, the wave-like texture; type 3, the curly texture; and type 4, the coily texture. No one can choose the texture of his or her curls or the straightness of his or her hair, it is a trait that runs throughout family generation. Hair also shapes itself not only with generation, but also with the size and shape of the hair’s follicle, running from tight to stretched. Of the four different hair textures, each of them has their own texture.
By finding the many traits and characteristics it is important for forensic scientists to look at the hair both macroscopically and microscopically. Macroscopically is things that you can see without any type of equipment. For example, length, color and curliness. Microscopically on the other hand can be a little more tricky,
Being a forensic scientist, with experience of over 20 years in the field, I’ve developed an expert level knowledge of topics such as hair analysis. I routinely classify and perform tests on specific pieces of evidence lifted from a crime scene. After analyzing the data, a forensic analyst, such as myself, will then prepare a detailed report that documents the work that was performed and the findings of the procedures. The integrity of these reports are remained due to the strict adherence to laboratory rules.
There are many things you don’t know about your own hair. Every strand of hair you have is made up of the medulla, cortex, and cuticle. According to http://en.wikipedia.com, hair is long chain of many proteins called Keratin grown on your skin. Hair always grows back because there is this special bulb underneath your skin that allows
“I Am Not My Hair”, is a beautifully written song from the soulful artist India Aria, and it perfectly captures the whole message of my essay. Braids, weaves, natural, long or short, hair has always been a pivotal point in my self-esteem and how I wanted other people to view me. Over a period of time; however, I wanted to challenge the societal norms of beauty and how that correlates to hair, so on a particular day, I decided to get all my hair chopped off. This moment not only changed my perspective on beauty, but also change the need for me to not get validation from anybody else.