- Discover essay samples

Dna and forensics

4.9 of 5.0 (185 reviews)

358 words

Dna and forensics Page 1
Dna and forensics Page 2
The above thumbnails are of reduced quality. To view the work in full quality, click download.

Dna and forensics

DNA and Forensics

In my essay I will discuss the topic DNA and Forensics. This is an interesting topic because there have been great advances in the field of forensic science that have affected it's credibility and usage in solving crimes that would otherwise go unsolved. DNA can be found in almost any bodily fluid (semen, saliva, blood, etc.) and in less obvious places such as a strand of hair. It has become a crucial part of investigating crimes, and will continue to develop this way.

DNA first came into use for forensic science in 1986. It was used by a scientist by the name of Alec Jeffreys and his colleagues from Leicester University. He was contacted by authorities to verify the confessions by a seventeen year old porter regarding a double rape-murder case. As it turns out, this boy proved to be "the first murderer to be cleared as a result of DNA fingerprinting". (Joe Mickel and John F. Fischer, 1998)

DNA can be found in such things as blood and semen. It can also be found in such things as tissue found beneath the fingernails of a victim after a struggle, it can even be found in saliva cells left on a mouthpiece of a telephone after a conversation. DNA is everywhere in a persons body, and can not be replicated. It is unique to every person, but all blood relatives have similar qualities that make them identifiable. (Joe Mickel and John F. Fischer, 1998)

DNA stands for deoxyribonucleic acid, and it basically looks like a twisted ladder, or a double helix with rungs or base pairs. Guanine (G), Adenine (A), Thymine (T), and Cytosine (C) are the four bases that make up the base pairs. The bases don't just pair with any other bases, there are certain predictable combinations: A with T and G with C, and these are true to any DNA. The human body contains in excess of three billion base pairs, only a few of these are what attract forensic attention. (Joe Mickel and John ...

You are currently seeing 50% of this paper.

You're seeing 358 words of 715.

Keywords: dna and forensics tud, dna and criminal forensics, mitochondrial dna and forensics, dna analysis and forensics quizlet, dna forensics history, dna forensics definition, dna forensics laboratory pvt. ltd, dna forensics ppt

Similar essays

Endangered Species

Endangered species are living things whose population is so reduced that they are threatened with extinction. Thousands of species are included in this category. The International Union for the Conservation of nature and Natural Resources publishes a list of threatened mammals, birds, reptiles, amphibians, and (many people do not consider t...

5 reviews
Creatine 3

INTRODUCTION Today in society there is a lot of pressure on the perfect image. Image is the way that everything is judged in the world. So with that perspective in mind, the search for the "perfect body" is what everyone is looking for. But with all of the commotion that is happening, very few people want to put in a solid effort in ord...

200 reviews
Genetic engenering 4

Genetic engenering -4 Genetic Engineering A new technology is dawning on our era, a technology that could change the lives of our children and their children to come. Will this medical advancement be pursued or will it be outlawed? The medical advancement is genetic engineering, the duplicating of human cells, and people have strong feeling...

74 reviews

In this essay I am going to explain what hypothermia is. How can one be exposed to get hypothermia and who are the people who are most likely to get it when exposed to the cold. I am also going to discuss How to prevent hypothermia or death when caught in cold water. What the symptoms and consequences of it are and their treatments....

34 reviews
Attention deficit disorder ( add)

Attention Deficit Disorder (ADD) Everybody knows at least on person with a difficulty of staying still, sustaining attention or inconvenient impulses. For some people the problem is so serious that it is regarded as a psychiatric disorder. Formally known as hyperkinesis, hyperactivity, minimal brain damage and minimal brain dysfunction, At...

98 reviews

Classification Essay Cloud formations have always been observed by people, many centuries before our time. People were always fond of clouds. They always wondered why some clouds were dark and others were white and fluffy, and why some clouds are so up high and others were so low that they looked reachable by the human hands. The m...

205 reviews
Melting pot theory

'The Melting Pot Theory' In the 1800's and the early 1900's, some people gave the America the name, the melting pot. People imagined this because thousands and thousands of immigrants coming from around the world were coming into the United States in hope of a better life. So most people imagined that all these different cultures were bei...

21 reviews
Social and Political Reactions to Mormon Polygamy

April 29, 1996 Social and Political Reactions to Polygamy ?We are a peculiar people,? Elder Bruce R. McConkie once said (McConkie 25). The Church of Jesus Christ of Latter-day Saints is one of a few ?odd? Christian religions. Many of its practices have created much persecution and political reaction, polygamy being one of t...

158 reviews
New high speed connections will change how we work and play

New high-speed connections will change how we work and play New High-Speed Connections Will Change How We Work and Play Online Society is becoming ever more dependent on being electronically connected with every other part of the world. Worldwide communication and commerce are just two areas where people benefit from living in an informat...

141 reviews
Biotechnology in food

REG MITCHELL's defence of ``Frankenfoods'' -- genetically engineered (GE)farm products -- in his Oct. 9 article ``So-called Frankenfoods have no more pathogens than are found in nature'' is a repetition of the mantra we hear daily from the global corporations that dominate agricultural biotechnology. His principal point seems to be that si...

33 reviews

Discoveries reveal things that we often would prefer to keep hidden. Discuss the concept of '' and the effects it has on those who are involved. You must refer to your set text and supplementary material which you have studied in relation to this topic. The topic discovery involves the reviling of past things that were previously unknown...

14 reviews
Hurricane flloyd

Floyd Hurricane Hur-ri-cane (n) 1. A tropical cyclone usually involving heavy rains And winds exceeding 74 mph. (119 kph.) From carib [huracan] What is a hurricane? Encarta defines it as a tropical cyclone with winds up to 74 mph (119 kph.) To many people it means destruction. Hurricane Floyd caused tremendous destruction to Amer...

99 reviews
Man vs

. the environment The environment can be something as vast as global weather patterns or as simple as the desert regions. With the advent of many technologies, the delicate balance of the environment has been upset (Elliot, 1961, p. 392). Strip mining, slash and burn farming, damming of rivers, and the extinction of many species of plants and...

31 reviews
Mitosis in cancerous cells

Mitosis, the process in which a cell undergoes nuclear division, is one of the four subdivisions of the cell cycle responsible for cell growth and reproduction. The first step in mitosis is prophase. In prophase the chromatin, diffuse in interphase, condenses into chromosomes. Each chromosome duplicates and has become two sister chroma...

145 reviews
Atsisiųsti šį darbą