Steps To DNA Testing

By: Seth Miller
Submitted: 2007-01-17 16:20:38
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DNA or Deoxyribonucleic acid is the genetic material present in the cells of a living being. Every nucleated cell has 46 chromosomes, apart from the sperm cells from the man and the egg of the woman that only contain 23 chromosomes. Forty- six chromosomes are essential to create a human being at the time of conception. Thus at conception, every human being receives half a DNA from the biological father and the other half DNA from the biological mother. Usually, DNA testing is conducted to verify the paternity and ancestry of a person. DNA testing is also an important tool used in tracking down criminals. It is used to create a portrait of criminal suspects.

A variety of DNA testing protocols are used worldwide. They analyze a small portion of DNA that varies from person to person. Tests are conducted using molecular methods such as a polymerase chain reaction or with DNA arrays and DNA chips.

DNA testing is a very simple and affordable process. Various stages are involved in DNA testing. It is necessary to obtain the DNA samples that have to be verified. DNA testing requires only a few drops of blood or cheek cell specimens obtained by rubbing the inside of the mouth with a swab. Most companies provide a free kit to collect these samples at home. The sample is then sent to a laboratory for analysis. The samples undergo a controlled procedure that includes extraction of cells from the swabs and purification and harvest of the DNA material found in the cells. The target regions of the DNA sample are copied, and the different target regions of DNA are separated from each other. The results of the DNA tests are then analyzed. Generally, the entire process is repeated to confirm the result, and a conclusive report is made after the confirmation of results.

The stages involved in DNA testing largely depend on the objectives behind the test. In most cases, self-sampling is sufficient to carry out DNA tests.

DNA Testing provides detailed information on DNA Testing, Paternity DNA Testing, Free DNA Testing, At Home DNA Testing and more. DNA Testing is affiliated with DNA Structures.

Article source: Expert Articles

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