DNA which is an abbreviation for Deoxyribonucleic acid is an important substance of the human body which is responsible for the functioning of human bodys. DNA definition states that it is a nucleic acid which contains genetic information about human body. DNA basically has its function to store information about your body.

It is found not only in human body but in all living creatures. You can easily find age of any living creature by simply studying its DNA structure. DNA definition simply states that it is a helical structure which is made of chromosomes. DNA has a capability to replicate itself and it is also responsible for production of RNA.

To get scientific DNA definition you can search for its definition on your web browser. There number of websites which can provide you with detail description of DNA participation in your body. One way to search for information is to download biological dictionary on your system. From this dictionary you can very easily get information about these biological terms and phrases.

DNA is basically composed of four nucleotides-

A-Adenine

G- Guanine

C- Cytosine

T- Thymine

The genetic structure of DNA is formed with any of these triplets. It may be formed with combination of AGC or ACT or so on. This helical structure of DNA was discovered by James D. Watson and Francis H.C. Crick in year 1953.

Nowadays scientists are using this DNA information to find age of fossils and of trees. They are many times used in forensic departments to analyze dead bodies and dead cells. This is a very great achievement of scientist as with help of this you can very easily estimate age of any creature.

Using this facility age of many fossil fuels have been estimated which made it esay for scientist to predict that which fuel is ready for use. To get more information about DNA and its structure you can concern any of biology books. This topic is basically taught to science students in their course.

So DNA is basically a printout of human body. To understand genetic structure of any body you study its DNA forma. As DNA organization for everybody is different. This means that no two bodies can have same DNA formatting. This helps to make easy distinction between two bodies on the basis of their DNA structure.