Contribution of nirenberg and khorana biography in urdu

January 9, , was the th birth anniversary of Har Gobind Khorana, a pioneering chemical and synthetic biologist, decipherer of the genetic code and a beloved mentor. His friend Uttam L. Khorana was born in , in British India to a poor family that placed a premium on education.

डॉ हरगोविंद खुराना हिंदी निबंध

Initially it was to be on fungicides and insecticides but the need to accommodate veterans from the second World War prompted the Indian High Commission to change his research focus to organic chemistry. After he completed his PhD, and having saved a portion of his stipend, Khorana funded his own post-doctoral position under Vladimir Prelog.

He later recalled that Prelog taught him to see beauty in chemistry, work and effort. Apart from publishing two papers, Khorana learned German to better understand cutting-edge chemical research.

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In , he returned to a newly independent and chaotic India, where, in spite of his qualifications, he was unable to find a job. But his connections with the scientific community resulted in a position at the lab of Alexander Todd in the UK. There, he contributed to the synthesis of the building blocks of DNA. Imagine DNA is a twisted ladder.

Each rung of the ladder is made of one of four possible bases: adenine A , cytosine C , thymine T or guanine G. Khorana and his co-workers at the Todd lab created these building blocks through chemical reactions. It was a big step towards unravelling the puzzle of heredity. Gordon Shrum, the director of the University of British Columbia, invited Khorana to start his laboratory there in This topic was critical to advancing the study of genes and for synthetic biology.