Richard Ramirez Analysis

Since the dawn of DNA testing in 1985, skin, hair, blood and other bodily fluids have become the most reliable physical evidence collected from a crime scene, especially in a sexual assault. DNA (deoxyribonucleic acid), contains the genetic blueprint that differentiates each person. Forensic testing determines if distinctive patterns in the genetic material found at a crime scene match a suspect's DNA with better than 99% accuracy (James 2009). Tommie Lee Andrews from Florida became the first person in the U.S. to be convicted of rape as a result of DNA evidence in 1987, Lee was sentenced to 22 years.

Therefore, collecting and preservation document are key elements in the processes of crime scene work. Even thought, this technique of evidence has been around for a while, it still proves to work wonders in the investigation process. Follow the necessary steps to be successful

Cover Letter After analysis and individualization of our evidence, we concluded that Talia Zagon killed Mr. MacDougall. To determine Talia Zagon was the murderer, we performed many tests in order to analysis and individualize the evidence. We had known samples of hair, fingerprints, handwriting, paper, ink, blood, and fiber from the five possible suspects. To compare these samples, we used the unknown evidence from our crime scene.

Entomologist expertise is very useful in aiding the medical examiner and homicide investigator to determine the victim’s time of death because they can identify the specific insect, the insect’s development as well as the season in which the victim’s death occurred (p.172). Another method that can aid the medical examiner and homicide investigators in finding out when the victim was killed is the help of forensics anthropologists. Forensics anthropologists are scientist who studies skeletons and human remains. The expertise of forensics anthropologist is very crucial when the body is discovered and already in the final stage of decomposition where the only way to find out the identity of the victim and the nature surrounding his or her death is by examining his or her skeleton or

The police department narrow down the investigation to four suspects Bob Whitney, Mary Lynn Turner, Joe Rangel and Allen Dann. They all provide a blood sample to the investigation to determine if one of the blood samples belongs to the suspect. A new development happened during our investigation, where information about a missing girl surface name Sarah Hopewell reflecting she could be the victim in the crime. Based on Sarah medical records we determine she was blood type B negative (Rh-), Caucasian and twenty-one years of age when she disappear. The question we are trying to answer during our investiagation “Do the skeletal remains belong to Sarah Hopewell?”

The Case Between 1975 and 1981 a man who became known as the ‘Yorkshire Ripper’ left at least 23 children motherless when he brutally murdered more than a dozen women in the North of England, and attempted to murder seven more. The victims were mostly prostitutes, but some were just ordinary girls (O 'Gara, 2006). The search for the ‘Ripper’ was one of the biggest investigations ever undertaken by a British police force and pre-dated the use of computers (Yorkshire Ripper, 2013). Because of the large scale of the case, this report will focus on just some of the investigative strategies used and some of the mistakes the police made. INVESTIGATIVE STRATEGIES

The investigators took a look a Hennis and knew they need to speak with him. Hennis cooperated with the investigators and provided blood, saliva, hair samples and fingerprint and palm prints. They also had Cone come in to identify Hennis, and he was able to pick him out of a police line

There are different programs that are used to input data. Dr Kim Rosmo developed a special computer software that accesses a three dimensional feature of a crime called the Criminal Geographic Targeting (CGT) (Barrow & Rufo, 2013). Another useful program that was created is the Geographic Information System (GIS) that is an automated system for capture, storage, retrieval, analysis and display of spatial data (Rossmo, 1999). Computer Statistics

It codes for the color of my eyes, hair, and many other areas. Almost as though, if I haven’t existed, all you would have to do is read my DNA to figure out how I looked like. DNA comes really in handy during investigation for murder cases. Almost every case has found out the criminal by looking at the blood or hair that has showed up on the victim’s body or at the crime scene, all due to the DNA. What’s really interesting is when a strand of my hair falls down into the toilet bowl.

During, our investigation one of the methods we used to solve the crime is blood typing. In crime scene on the Community College of Aurora it present evidence of blood spatter on the victim clothes and the surrounding areas. The blood typing method is a simple and cost-effective way of narrowing the possibilities of suspects in our investigation. The police department already narrows the suspect to four different individuals. To conduct this method an individual must obtain the following materials: Four vials of blood (4 suspect of the investigation), vials of Ant-A serum, Anti-B serum and Anti-D serum, toothpicks (color-coded for each Anti serum) and Field Notes to record the results.

It 's circumstantial, biological, and class. It was crucially important to the case. At the crime scene, the investigators found blood. They collected it and analyzed it, by running tests. The tests came back to prove that the blood was the same type as O.J. Only 0.5% of the population would have matched.

The past decade has seen great advances in a powerful criminal justice tool: deoxyribonucleic acid, or DNA. DNA can be used to clear suspects and discharge persons mistakenly accused or convicted of crimes (“Using DNA to Solve Crimes”). When used to its full potential, DNA evidence will help solve and prevent some of the United States of America 's most serious violent crimes. DNA is generally used to solve crimes in one of two ways. In cases where a suspect is identified, a sample of that person’s DNA can be compared to evidence from the crime scene.

When DNA is found, it puts the case on a new level. DNA analyst and investigators have a specific job to find evidence on or at the crime scene. Lead prosecutor, Marcia Clark, as she was the one that found the glove at the scene and the glove on his property, also stumble across some DNA. DNA was matched and tracked back to O.J. Blood stains left behind were 100% traced back to Mr. Simpson. To me, that screams guilty.

Crime labs today have things like techniques and tools for finding and, preserving, and analyzing fingerprints. We have powders; powder is cleaned over the prints. Particles adhere to the print and can then be lifted off with tape. Carbon powder can be utilized on light surfaces; aluminum powder can be utilized on dim surfaces. Powders are speedy and but not always easy to use determining what kind of surface the print is on.

Once these are completed, the United States Secretary of Education has to accredit the schooling that was completed (Ackerman 55). Another important step of the hiring FBI process is to pass the background check and physical fitness test. The person must be an in excellent physical condition to even think about passing the physical test. The applicant also must be able to use firearm, defense tactics, participate in raids, and more (Ackerman 53). The background check “is checking to see the applicant’s character associated, reputation, loyalty, ability, financial responsibilities, biases, or prejudice, and alcohol or drug use” (Ackerman 151).