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DNA In Forensic Science

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DNA in Forensic Science DNA is the carrier of genetic information in humans and other living organisms. It has become a very useful tool in forensic science since it was discovered. In forensic science, DNA testing is used to compare the genetic structure of two individuals to establish whether there is a genetic relationship between them.
One example of the use of DNA in forensic science that is important in biology today is comparing a suspect’s DNA profile to DNA that was discovered at a crime scene. This can be done by DNA fingerprinting or by collection of body fluids, such as saliva, semen, urine, blood, skin and hair, found at the scene. Secondly, DNA testing can rule out possible suspects as well. DNA testing can be used to free individuals …show more content…

These microscopic organisms include bacteria and archaea. Population evolution in microbial life refers to the change that occurs in the microscopic organism populations over a

SC160 Basic Biology Assignment 08 period of time. Evolution of microbial life is used in science and research for researching and studying diseases caused by the evolving microorganisms. This information is used by scientists to research and develop with medications to fight these diseases.
Population evolution and microbial life are presented in the following examples. First, the evolution of HIV (human immunodeficiency virus), which has led to the resistance to some antiretroviral medications. Second, the H1N1 flu virus is a disease which was nicknamed the swine flu because the virus that causes the disease originated from live pigs, which is where it evolved. (DeNoon and Hitti). Lastly is the evolution of MRSA (Methicillin-resistant Staphylococcus aureus). MRSA is a bacterium that is responsible for various infections in humans that are difficult to treat due to its development of a resistance to common antibiotics. MRSA is very common in hospitals, prisons, and nursing homes.
Biological Diversity …show more content…

Speciation is the evolutionary process by which new species are formed. This process is responsible for species diversity over geologic time. Another example of biodiversity evolution is genetic biodiversity. Genetic biodiversity is the variation of the genes that exist within a specific species. Maintaining a genetic diversity gives the population protection against change, which allows it to evolve and adapt to a new environment. The last example is ecological biodiversity, which is the variation in
SC160 Basic Biology Assignment 08 the ecosystems that are found in a region or the whole planet. We see this type of biodiversity evolution all around us. For example, the forest of Maine versus the forests of Colorado.
Plant and Animal

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Stories about the use of DNA evidence to convict offenders or exonerate defendants in criminal cases have become increasingly common in the recent years. Forensic DNA technology is transforming the way law enforcement officers investigate crimes, especially violent ones. DNA has an extremely important role in criminal trials due to its power of exoneration of innocent individuals. Many wrongfully convicted individuals, but later exonerated by DNA evidence, falsely confessed or made an incriminating statement. This can be seen in the Earl Washington case as presented by Frontline.

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Dna Fingerprinting Lab Report

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Why Is The Brush Tail Possums Considered Microevolution?

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Microevolution refers to the change of a gene frequently within a specific species. Such changes may be accomplished by natural selection as a specific trait may become favourable in a set of environmental conditions. This trait may help the species survive and is therefore passed onto offspring and becomes more frequent in the species. Evolution on this scale can be observed over short periods of time. For example, when there is a chemical change in an environment and the species adapt to be better suited to this change, this is considered microevolution.

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A Summary Of Forensic Pathology

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Forensic hair examinations are most frequently conducted to assist investigation and prosecution of crimes of violence such as murders and sexual assaults. Although the probative value of hair comparison is generally much lower than that of some other forms of forensic evidence such as fingerprints or DNA, it can still provide good corroborative evidence. Hair comparison can help establish associations between any combinations of the following: accused, victim, crime scene or weapon. There is a consensus that hair examination can yield reliable information about class characteristics of hair strands. Experts can identify major as well as secondary characteristics.

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Clostridium Botulism Research Paper

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Microorganisms are everywhere; organisms that are so small to be seen with the human eye cover the entire planet, including humans. Some of these microbes help with digestion of food other actually protect humans and other organisms from harm. Some however are deadly. Botulism for example is a deadly assassin hiding until the time is right to strike. Botulism is so good at its job that it can be easily misdiagnosed as other medical disorders.

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Comparing The Forensic Science Method And The Scientific Method

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The use of the scientific method is something that has traveled the world giving new thoughts towards identifying and implementing the works of the scientific truth. However, its work does not support anything with dealings of the scientific method. In no way, shape form or fashion can any individual identify or discover any forensic information using the scientific method. The newly modified version named, the forensic science method, gathers information secured by investigators which varies from findings at the crime scene to observable proof. The information found provides verification of the witnesses’ story being either the truth or a lie.

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When a crime is committed there are multiple ways investigators can gather their evidence. Testimonies, direct evidence, circumstantial, and even physical evidence; theses are all different yet effective types of evidence investigators can use. Although none of these methods are incorrect ways of collecting evidence, in “Forensic: Evidence, Clues, and Investigation” by Andrea Campbell, she states that forensic evidence is the most important and useful. Forensic evidence and physical evidence are the same thing. It is the physical characteristics of someone or something that has been left behind and can be traced back to them.

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Anything that can be used in a court of law is referred to as forensics. Forensics can be any scientific test that can prove a connection to a crime. The information obtained in any test must be admissible in a court of law. There are many branches of forensic sciences; one branch that is not well known is forensic radiography, or forensic imaging. “Conducting examinations that use ionizing radiation to gather and analyze forensic evidence constitutes forensic radiography” (ASRT. (2010).).

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Genetic Mechanisms Evolved Into The Theory Of Evolution By Natural Selection

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Evolution in its most basic sense is change over time (Coyne 3). Biological evolution deals with the change that occurs in all life through successive generations. Evolution gives rise to a vast number of species and great diversity, down to the molecular level. These changes are, for the most part, beneficial to the organism. The theory of evolution is a result of a formulated scientific theory made mostly by Charles Darwin.

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