Google Doodle honors Har Gobind Khorana, who deciphered our DNA

Khorana did stints in research institutions in Switzerland and Canada before landing at the Institute for Enzyme Research and the University of Wisconsin, Madison. There, he decoded how cells read the language of RNA written in structures represented by the letters A, C, U, and G. He did this by using enzymes to create sequences of these letters. Arranging them into distinct patterns, he and other scientists found that the genetic code comprised 64 three-letter “words,” known as codons.