Dna Profiling Research Paper

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DNA (deoxyribonucleic acid) exists in virtually every cell of the human body. It can be found in blood, in urine, in feces, in salvia, in some hair, in the shed skin cells found in the sweatband of a hat. Although over 99.9% of the DNA sequences in the human genome are identical between individuals, the 0.1% variation can be used and targeted for identity testing and used to distinguish one individual from another therefore making DNA profiling a fundamental test for forensic scientist.
Today DNA profiling is widely used in the field of forensic science to analyse evidence in law enforcement, mass disasters and paternity cases. DNA profiling (also called DNA fingerprinting, DNA testing or DNA typing) is an unambiguous identity technique that …show more content…
The earliest DNA profiling is the RFLP (restriction fragment length polymorphism) method. In this technique the first step involved begins with a sample of an individuals DNA typically called a “reference sample”. The DNA is then extracted and cut into small fragments using a restriction enzyme. The enzyme used is called restriction endonucleases and it acts as molecular scissors. The long DNA strands will be “cut” at specific spots between any two of the four nucleotides that make up DNA, adenine, thymine, guanine and cytosine, respectively. As each individuals DNA is different the enzyme will cut at different sites resulting in different sized fragments. The next step is called Gel Electrophoresis. A gel, a suspension that can carry an electrical charge is set up. DNA from each person, a control sample, and the sample from the unknown are loaded into different lanes of the gel insuring that the material doesn’t get mixed. An electric current is then run through the gel pulling the negatively charged DNA toward the positively charged end. The shorter fragments travel much farther than the longer fragments through the gel

Dna Profiling Research Paper

talking about the how DNA profiling is used to solve crime scenes. I will also be looking at the ethical factors about the DNA profiling for crime scenes. I determine whether DNA profiling is an effective method for investigation and solving crime scenes.…

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Dna Profiling Research Paper

DNA profiling can bring up many questions in association with civil liberties, justice, and privacy. With questions arising from topics like these, DNA profiling can either help or hurt an individual. DNA profiling is the process of using DNA for the identification of an individual and what is beneficial about it is that it is one of many methods used by law enforcement to catch criminals and remove suspects from suspicion. In order to for it to work in favor to those who are wrongfully convicted…

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Essay on The Positive and Negative Effects of Dna Profiling

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