How is a DNA Test Performed?
DNA Background DNA testing was first established in 1985 by Sir Alec Jeffreys. It has grown in popularity due to its practical applications in various methods of identification and research. Along with fingerprint testing, DNA testing has evolved through the years by fine-tuning methods and operating systems. Now, DNA testing is the most popular and most accurate tool for research. Applications The applications of DNA are primarily involved in forensic investigations, parentage testing and other research methodologies. From the studies to human dispersion to wildlife observations, its application is so vast it virtually touches every aspect of life on earth. The convenience to search and research given by DNA test results has presented a reliable option on which the humanity can make accurate results and conclusions to their quest for knowledge. DNA Testing DNA tests observe three major stages. The first stage refers to the act of obtaining DNA samples. It could be a piece of a hair, a
There are a number of different DNA testing protocols used throughout the world today. They generally use the same principles and analyse a small portion of DNA that is known to be highly variable from individual to indivdual. Most DNA testing laboratories use a technique based on a process known as PCR (polymerase chain reaction). This is simply a means of ‘copying’ targetted regions of DNA to provide sufficient material for laboratory analysis. The stages of DNA testing include: • Obtaining DNA samples generally from the child and alleged father. A simple painless mouthswab is all that is required, which can be taken by yourself in the comfort of your own home. Most DNA testing companies provide a free kit that can be used for this process. • The samples are posted to the DNA testing laboratory for analysis to be carried out. At the laboratory the samples are will undergo a strictly controlled procedure which will include: • Extracting the cells from the mouth swabs • Purifying and h
