Google is celebrating the 93rd birthday of DNA scientist Rosalind Franklin with a tribute doodle. And to mark the celebrations, Google has replaced its second `O' with the image of the scientist and the `L' with the DNA double helix.

Everyone knows how important DNA stands in our lives, cell metabolism and genetics. The credit of such a vast advancement in medicine goes to Ms. Rosalind Franklin, who has discovered the structure of DNA (deoxyribonucleic acid).

Born on July 25, 1920 in Notting Hill, London, Rosalind Franklin was a British biophysicist and x-ray crystallographer. It is due to her scientific work that the discovery of the DNA double helix took place. Her studies also make an important part in the understanding of the molecular structures of RNA, viruses, coal and graphite.

She died in April 1958 at the age of 37 due to ovarian cancer. Her work has many times been recognized by several universities and colleges.

She has perhaps become best known as "the woman who was not awarded the Nobel prize for the co-discovery of the structure of DNA".

It was her data that helped in the discovery of the structure of DNA during the 1953 hypothesis, acknowledged Mr. Francis Crick, her friend and co-scientist.