This website uses cookies to ensure you have the best experience. Learn more

The Use Of Dna In Forensics

1257 words - 5 pages

The Use of DNA in Forensics

DNA (noun) [deoxyribonucleic acid] first appeared 1944 : any of various nucleic acids that are usually the molecular basis of heredity, are localized especially in cell nuclei, and are constructed of a double helix held together by hydrogen bonds between purine and pyrimidine bases which project inward from two chains containing alternate links of deoxyribose and phosphate.
What is forensics?
fo*ren*sic [1] (adjective)
First appeared 1659
1 : belonging to, used in, or suitable to courts of judicature or to public discussion and debate.
2 : ARGUMENTATIVE, RHETORICAL.
3 : relating to or dealing with the application of scientific knowledge to legal problems *~ medicine* *~ science* *~ pathologist* *~ experts*.1
How are the two related?
DNA can be used to identify an individual. In relation to forensics, when there is a crime investigation and some proof is needed to back up the suspect DNA is usually the way that scientist deal with the situation. Specialized forensic scientists scan about ten DNA regions that vary from person to person and use the data to create a DNA profile for that individual. This is effective because there is a very small chance that another individual has the same DNA profile in the same set of regions.
DNA can be used for many other things besides for committing a suspect. It can also free a person wrongly accused of a crime, identify crime and catastrophe victims ,establish paternity and other family relationships ,detect bacteria and other organisms that may pollute air, water, soil, and food ,and even match organ donors with recipients in transplant programs .
How effective is DNA in identifying a person?
DNA identification must be used intelligently. When you find a certain thing through DNA at a crime scene that thing alone may not be enough. However if many little things are found then you can connect them all and find what you need. If the first thing you find is found in almost half of the American population that is not very helpful but if you keep on finding more and more things eventually it is narrowed down to one specific person.
Once the DNA is found how is it typed up?
Only one-tenth of a single percent of DNA makes one person different from the next. Scientists can use these variable regions to create a DNA profile for a person, using samples from hair, blood, bone and other body tissues and products. Generally in criminal cases this involves getting samples from crime-scene evidence and a suspect giving off some DNA, and analyzing it for the presence of a set of specific DNA regions.
Scientists find the markers in a DNA sample by designing small pieces of DNA called probes that will each seek out and tie to a complementary DNA sequence in the sample. A series of probes tied to a DNA sample creates a unique pattern for an individual. Forensic scientists compare these DNA profiles to the suspect's sample to see if the suspects sample...

Find Another Essay On The Use of DNA in Forensics

The Fallibility of Partial DNA in Courts

1983 words - 8 pages Results.” ABA Journal 99.9 (2013): 1. Business Source Premier. Web. 23 Jan. 2014. Naughton, Michael, and Gabe Tan. “The Need For Caution In The Use Of DNA Evidence To Avoid Conviting The Innocent.” International Journal Of Evidence & Proof 15.3 (2011): 245-257. Academic Search Premier. Web. 23 Jan. 2014.

The Role of DNA in Cloning

833 words - 3 pages genetically identical to the unit or individual from which it was derived.” I always thought that cloning was impossible, and is just science fiction. The process of cloning is the creation of genetically identical copies of a biological unit. This means that every single part of the DNA is identical. The natural way of a clone is identical twins. In nature, twins occur just after fertilization of an egg cell by a sperm cell. Then when the

The DNA of Relationships

849 words - 4 pages the relationships are strong and healthy in the eyes of God. In The DNA of Relationships, there were two things that made me aware of what I had not thought of doing. First, I was aware that I shouldn’t give others the power to control my feelings. The statement stood out to me about how I can focus on the person and take the right steps of personal responsibility to refuse attention of what the person has done. The “not giving anyone the

The Spectrophotometer and its uses in Forensics

508 words - 2 pages check for food poisoning and for experiments to make atomic bombs. The invention of the spectrophotometer has impacted a wide range of fields from physics to chemistry and has led to the discovery of unknown properties of light.How it worksThe modern spectrophotometer, popularly termed the UV (ultraviolet) spectrophotometer, does not always use radiation; in some cases, radiowaves with shorter wavelengths have been used. The spectrophotometer works

Benefits and Restraints of Genetic Engineering and the Use of Recombinant DNA

1303 words - 5 pages Benefits and Restraints of Genetic Engineering and the Use of Recombinant DNA Genetic engineering and recombinant DNA have many useful purposes which benefit humans in many different ways in many different fields. The latest bio-technological breakthroughs allow the use of recombinant or 'mixed' DNA to be used more and more and in increasingly safer conditions. However there are still many problems and restrictions with

Forensic Odontology and Its Use Prior To and After the Development of DNA Testing

835 words - 4 pages anyone could have made the denture, other dentists agreed that, after spending a large amount of time creating an appliance, a dentist can recognize his own work. [[CITE]] Prior to the development of DNA, use of bite mark analyses were accepted in court and seen as highly reliable. When analyzing a bite mark, it is important to consider certain factors: a time lapse between the time of bite and analysis may cause deterioration and reduce

The Impact of Ancient DNA Discovered in Siberia

1478 words - 6 pages right and who was wrong. Now that there is actual traces of life in that area, scientists can paint a picture of what it looked like and can use that depiction to delve even further into the past. Based on the samples that were gathered and the different plant and animal DNA that composed the samples, scientists were able to conclude that this was an herb and plant dominated area with strong populations of grazing animals that included bison

The Applications of DNA Typing

2122 words - 9 pages with DNA Typing also comes the job opportunities that are available, the organizations that have been created in respect to this subject, and the average salary that is available to people who hold a job in this field of work. The use of DNA Typing will become more common in the near future as the number of jobs in this field is expected to rise over the years. DNA Typing is “a technique used especially for identification by extracting and

Solving the Structure of DNA

945 words - 4 pages pair together and are held by two hydrogen bonds that were identical in shape to the guanine and cytosine pair held together by at least two hydrogen bonds (194). This discovery showed that the two chains of DNA are complementary to each other. With these individual contributions coming together, Watson and Crick successfully were able to piece together the structure of DNA. Linus Pauling was another individual that aided in solving the

DNA - The Thread of Life

693 words - 3 pages The 'thread of life', is deoxyribonucleic acid, otherwise known as DNA. It is the spiral shaped molecule found in the nucleus of cells. Scientists have known since 1952 that DNA is the basic substance of heredity. This was hypothesized, and later confirmed by James D. Watson and Francis Crick. They also know that it acts like a biological computer program over 3 billion bits long that 'spells' out instructions for making the basic building

A Forensics Memory Study of Malware in Android Operating Systems

2744 words - 11 pages attacks when they occur on mature operating system platforms such as Windows and Linux. However, due to the immaturity of Android memory image forensics, it is relatively problematic and time consuming to conduct such investigations on Android systems. In this research, we take advantage of recent advances in Android memory forensics technologies to explore a sample of these malware attacks, utilizing the open source digital forensics Volatility, a

Similar Essays

Dna In Forensics Essay

1188 words - 5 pages in Forensics, example of that is DNA Profiling, which is consisted of a bank of DNA samples specifying belonging to a person. RFLP "restriction fragment length polymorphism." was an early version of DNA profiling and involved of DNA being digesting it with one or more restricted enzymes that is analyzes the length of DNA strands (repeating the base pairs). Law Enforcement keep notes on arrests that have founded people innocent of crimes, and

Use Of Dna In Criminal Investigations

2851 words - 11 pages Before the 1980s, courts relied on testimony and eyewitness accounts as a main source of evidence. Notoriously unreliable, these techniques have since faded away to the stunning reliability of DNA forensics. In 1984, British geneticist Alec Jeffreys of the University of Leicester discovered an interesting new marker in the human genome. Most DNA information is the same in every human, but the junk code between genes is unique to every person

The Use Of Dna To Treat Disease

2532 words - 10 pages The Use of DNA to Treat Disease In recent years there have been great advances in medical science. Scientists believe that a gene can be transplanted into humans who suffer from severe diseases that are life threatening. These gene transplants could perhaps cure diseases for which no effective treatment now exists. This treatment is called gene therapy, one method in a series of genetic techniques called genetic

Short Description And Explanation Of Forensics In The Legal System

545 words - 2 pages According to dictionary.com, forensics is "the use of science and technology to investigate and establish facts in criminal or civil courts of law." In fact, forensics science plays the strongest role in solving any crime. There are a variety of methods involved with solving crimes; the main two are witness accounts and forensics evidence.Witness accounts and other human dependability prove to be inferior to the power of forensics science. There