Identifying Materials Lab

Based on the information in the text sheet and in your assigned reading for this week, discuss the following scenarios and determine which type of forensic analysis technique(s) should be used, and why:

The results in this lab showed that suspect 2 was a match for the DNA found at the crime scene. This was determined by DNA fingerprinting. In this lab, the samples of DNA from two suspects and the DNA from the crime scene were cut with two different restriction enzymes and then the DNA was run through gel electrophoresis. The different restriction enzymes cut the DNA in different places, so when the DNA was run through the gel, the gel showed two fragments for each sample based on their size. The fragments shown are known as bands of DNA. These bands of DNA for each suspect were analyzed and compared with the bands of the DNA from the crime scene. The bands of DNA were compared based on the distance they traveled through the gel from the wells.

The scientific knowledge and technology have developed significantly over the past decades in our society compared to olden days.These developments enhanced the importance of the forensic science field of the crime investigation where it is defined as the “application of science to those criminal and civil laws that are enforced by police agencies in a criminal justice system”(Textbook, p.4). As a result, the police agencies have gained significant benefits over the advanced forensic science where they can collect more critical evidential information related to the crime from both crime scenes and the body. It allowed the police agencies to increase the crime arrest rates and gain the member of society’s both trust and confidence from it. In

What do you know about crime scene investigations other than what you see on TV? Crime scenes vary with the amount of physical evidence which is ordinarily expected to be recovered. The only thing consistent about crimes scenes is their inconsistency. A crime scene investigation can described as the application of what has become known as “Locard Exchange Principle”. The “Locard Exchange Principle” is mainly a theory that was established by “Dr. Edmond Locard”. Crime scene investigator document crime scenes in detail and collect physical evidence. Crime scene investigators include recorder to record the data, sketch artists to sketch the scene, photographers to take photos of the crime scene and evidence collectors.

Footprints and tire marks are one of the most commonly pieces of evidence that is found at a crime scene. The impressions of the footprint at the crime scene can be compared to suspect’s

Our evidence contained the ingredients baking powder and cornstarch. We came to this conclusion when powder “B” had a marshmallow smell and it caught on fire. And for powder “E”, we realized it was the other ingredient because it turned foggy during the water test. The brand of foot powder found in the crime scene would be baking powder and cornstarch, I know those powders were the ones at the crime scene because according to all my observations,the ones who made sense were baking powder and cornstarch. I believe Ms.Tavaglione committed the robbery. The most useful powder test I found was the heat test. The heat test was helpful for me because I found it way easier than the water, vinegar, and iodine test. Also It was easy for me than the other tests because you can just

In this case, T was tried for the murder. Footwear marks were found at the scene of murder and were recovered by Mr Ryder (expert witness). He compared these footwear marks with the trainers found in the appellant’s house after his arrest. Below shown are the results of the comparison made and the explanation given for each result-

In order to answer the guiding question, a procedure needed to be followed. DNA fingerprinting is how forensic scientists figure who the criminal was

Starting in the 20th century, law enforcers and courts in the U.S., as well as victims/bystanders, all have recommended the increased use of science in solving crime and achieving justice. In the 1960s, the Executive Crime Commission Task Force reports on Police, Science, and Technology called for making physical evidence more reliable in the investigation and judgment of crimes. Ever since the production of those statements, there have been outstanding advancements in the uprising of forensic facilities serving the criminal justice system and in the complications of scientific techniques employed to examine and interpret physical evidence. Forensic Scientists and investigators are now using both physical evidence and data collection as tools to solve crimes.

The definition according to Merriam-Webster, of forensics is relating to the use of scientific knowledge or methods in solving crimes. Today forensics is widely used to aid in the solving of cases. Forensic Science is just an umbrella term for a range of sub-sciences present in Forensic Science. There is forensic pathology, forensic psychology, and forensic anthropology among others. One of the most important aspects of forensics are the various laboratory techniques applied to solve crimes. The use of microscopy and fingerprinting are two categories that have furthermore expanded the use of forensics in the present.

1. Label two boiling tubes A and B. Mark a dark spot on the side of a 400cm3 beaker, then ½ fill

What is a crime scene? What is forensic science and how is it conducted? What factors can impact evidence and what procedures have to be taken to stop this from happening? What factors have to be taken into account when conducting forensic science and why? How will not doing this impact a court verdict? In my assignment I hope to answer these questions.

Crime scene reconstruction is one of many profiling techniques used to build a profile for an offender or to solve a crime. Crime scene reconstruction uses forensic science. First Assumptions are made about how the crime was carried out. Then deductive and inductive reasoning is used to support the theory of how the crime occurred. All piece of evidence at the crime scene is Analyzed. Investigators will conduct interviews of the victim if alive, or potential witness, family members and close friends. The Crime scene must be photographed and the locations of all objects of the crime scene are documented. It’s important that nothing at the crime since is move till photos and taken. It is important that everything is the same because it

chemical tests on a small amount of liquid left at the crime scene. What fascinated me the most about this

In the Crime Scene Evidence Collection, an expert in Brain Fingerprinting examines the crime scene and other evidence connected with the crime to identify details of the crime that would be known only to the perpetrator. The expert then conducts the Brain Evidence Collection in order to determine or not the evidence from the crime scene matches evidence stored in the brain of the suspect. In the Computer Evidence Analysis, the Brain Fingerprinting system makes a mathematical determination as to whether or not this specific evidence is stored in the brain, and computes a statistical confidence for that determination. This determination and statistical confidence constitute the Scientific Result of Brain Fingerprinting: either “information present” (“guilty”)-the details of the crime are stored