Most Important Influences In Forensic Science

Due to the uniqueness of DNA it has become a powerful tool in criminal investigations

DNA is one of the most important pieces of evidence that a criminal justice agent can use in a court of law. There ae slim to no crimes committed that doesn’t have some type of DNA evidence left behind. Some DNA evidence could be, but not limited to, fingerprints, blood, hair, and any other bodily fluids. DNA is known as Deoxyribonucleic Acid, and is one of two types of molecules that encode genetic information (Medicine.net, 2017). DNA is characteristically unique to each person individually, unless they are a twin. DNA dictates a person’s look such as their eye color, blood type, height, hair color, skin color, etc. With this genetic information, intense testing can be done to find who may be connected to the genetic makeup of each stand

between a cut (an injury that is longer than deep) and a stab wound (an injury

Since its discovery in the 1980’s, the application of DNA has been utilized in many ways. When Deoxyribonucleic Acid, or DNA is examined, a precise decoding of genetic information is revealed. With the exception of identical twins, every person’s genetic code (commonly referred to as a Genetic Fingerprint) is inherited and unique. From Maury advising men everyday on TV “You ARE the Father!” or “You are NOT the Father!” to learning the descendents of former slaves are related to President Thomas Jefferson, we have come to rely upon and expect the accuracy of DNA.

Every human being in the world is different, except for identical twins. Everyone is made up of different DNA that is passed on from the mother and father to the individual. It’s what makes the world unique and diverse. DNA, also known as deoxyribonucleic acid, is a long molecule that contains our unique genetic code (Genome Campus, 2016). DNA is found in the nucleus of a cell. It’s made up of a nucleotide strand that contains a phosphate molecule, ribose sugar, and a nitrogenous base. There are four different nitrogenous bases called Adenine, Guanine, Thymine, and Cytosine. The phosphate molecule and the ribose sugar join to act like a backbone (Kerns, 2017). The four different bases connect to this and act like the steps on a ladder. When these three parts of DNA bond together, hydrogen bonds are formed. The four bases are separated into two different categories. Adenine and Guanine are purines and can only bond together, and Thymine and Cytosine are Pyrimidines and can only bond together. This is

Over the past few years, DNA has become a revolutionary tool for identification purposes not only in the forensic field but also in identifying genetic defects and heritage patterns over generations. DNA, present in the nucleus of most cells, is a molecule that carries all the genetic information required for the proper development and reproduction of the cell. DNA is coiled into chromosomes and in humans, there are 46 in total. What makes DNA different from one person to another is the arrangement of nucleotides in the sequence. These can be further changed by polymorphisms. If two people are related, for example siblings, their DNA will be highly similar but differences are not completely absent.

Forensic science is a broad term that refers to the use of science or technology in a court room environment. Forensic science plays an important role in modern popular culture; the police procedural is highly dependent upon cutting-edge forensic science. Moreover, many people are aware of the impact of DNA testing on the modern criminal justice landscape. However, forensic science actually predates many modern scientific advances; almost as long as there have been controversies, there has been some type of forensic science.

DNA has a huge impact on the criminal justice field, it helps to identify missing persons, perpetrators of crimes as well as identify victims. In a journal entitled “Concerns Associated with Expanding DNA Databases” by Candice Roman-Santos, she writes, “The three largest DNA databases in the world, in decreasing order, are: 1) CODIS; 2) NDNAD; and 3) the California DNA

DNA stands for deoxyribonucleic acid. it's the genetic code that determines all the characteristics of a living aspect. ... each nucleotide contains a sugar and a phosphate molecule, which make up the 'spine' of DNA, and, one of 4 natural bases. The bases are adenine (A), guanine (G), cytosine (C) and thymine (T). DNA fingerprinting is a revolutionary technique that enables scientists to match minute tissue samples and facilitates scientific studies on the composition, reproduction, and evolution of animal and plant populations. As a device for fantastic identification of criminals, it plays a particular function in forensic technological know-how. DNA Fingerprinting is a realistic manual to fundamental principles and laboratory methods as

DNA testing is a powerful tool used for identification. It is used by scientists to gather evidence at crime scenes, determine paternity tests and find out any predispositions to diseases. DNA can be a powerful tool used to help solve criminal cases, and determine whether a person is innocent or guilty (1. Easy DNA, 23rd February 2015). It is shown that DNA databases reduce crime rates, especially in categories where forensic evidence can be collected from the scene such as murder, rape, assault, and vehicle theft (6. H. Brevy Cannon, January 11 2013). DNA is the master molecule of life and controls the growth and development of every living thing (2. Katie Lachter, 1997). There are many sources for DNA testing. Some of these sources are

As every year passes, we learn more about ourselves and the world around us. The scientific community makes it their mission to learn about criminology, anatomy, and most importantly ourselves. The key to learning about humans is their DNA. The DNA is their blueprint. The DNA is a powerful tool that can be used to unlock the mysteries of humans. Using this complex structure the scientific community can clearly create DNA profiles of anyone. Using the DNA samples, collected at a crime scene, I will be explaining the results from the crime scene, describing how to create DNA profiles, explaining the process of gel electrophoresis, and finally I will be describing the many uses of gel electrophoresis.

DNA, or deoxyribonucleic acid, is found in nearly every single one of the 75 trillion cells that made the human body. Chromosomes are made up of protein and DNA molecules. An in-depth look at these threadlike strands reveals what scientist’s calls the double helix. This large, double-stranded molecule resembles a long, spiraling ladder. The sides of this ladder are made up of four building blocks called nucleotides. Each nucleotide is made of a sugar joined to a phosphate and a base. These bases include Adenine (A), Thymine (T), Guanine (G) and Cytosine (C), “the four letters that make up the DNA alphabet”. Nucleotides pairs up according to strict rules, the A-T and G-C base pairs repeats in various sequences repeatedly, creating the 3 billion

DNA, or deoxyribonucleic acid, contains all the hereditary data around a human being. It's the directions for the body's whole hereditary cosmetics. DNA is one of a kind to every distinct individual. A man has the same DNA all through his whole body, and it's situated in each cell. Cells are the fundamental building squares of all people ("Criminal Law - Lawyers.com," n.d.) . This can be used by forensic scientist to essentially then determine if DNA samples such as mouth cells, hair or blood match the criminals.

In my opinion I don’t think that any one drug would have the greatest challenges to forensic science. I think that all drugs have challenges, they are not all the same challenges but they are all equally as challenging. Additionally all of the drugs can potentially be more challenging; it all depends on whether or not there are legal substances mixed in with the drug, and how pure the drug is. In addition other factors such as the location of where the drug was found, what other substances were found at the crime scene and what happened at the crime scene all contribute to how challenging a drug will be. Therefore there are too many factors to conclude that one drug is more challenging as opposed to another drug for forensic

Due to the DNA’s specificity, samples can be utilised for identification. DNA is a nucleic acid composed of deoxyribose sugar bound to a phosphate group and one of four nitrogenous bases (adenine, guanine, cytosine and thymine). Each section of these three components are referred to as nucleotides, which are joined to the phosphate or sugar of another nucleotide by strong covalent bonds to form a backbone. The nitrogenous bases are joined to complimentary bases of another nucleotide (adenine with thymine, guanine with cytosine) to create a double stranded molecule (Figure 2). To complete the double helical structure, the molecule coils to compact it’s contents. DNA molecules can contain up to two million base pairs, with a human genome containing approximately 3 million base pairs. The random assortment of nitrogenous bases as well as the numerous mutations within certain DNA sequences, results in genetically diverese DNA molecules and genomes between individials.