What is the Role of DNA?

DNA is one of the most important molecule that plays a very crucial role in the life of every living being. They contain genetic instructions and information that is solely responsible for reproduction, function, and development of life on this planet.

Any form of life and some of the viruses which are present on Earth have DNA. In this post, I will describe some of the major functions that this DNA, or deoxyribonucleic acid, have.

Coding Proteins

Proteins carry out the work for every cell in our body. And hence, our body needs sufficient amount of protein. Even though you can get proteins from food supplements as well, but there are some amino acids which only our body can make.

And one of the major functions of DNA is to make those proteins for every cell. DNA holds the code for the proteins, also known as holding information. This information is read and converted into a messenger molecule. The message is then translated into a language which dictates amino acids how to produce a particular protein.


This is the most vital function of DNA. Replication is needed for a lot of functions, namely

  • Reproduction
  • Growth of cells
  • Maintenance and growth of tissues and body systems, and so on.

DNA consists of 4 bases, A, C, T, and G. These are present on the DNA strand, which helps them to replicate. When 2 DNA strands combine, the unpaired bases connect with each other, forming a new DNA strand.

This way, new cells are formed in your body.

Genetic Code

DNA is also responsible for sending genetic information from one cell to another. When a sperm and egg combine, a genetic code is produced which is used to identify you all throughout your life. This also helps when you have to go for DNA testing.

There are many more functions that DNA plays in our body. But mainly, these are the functions which form major part of DNA.

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