50 years of Understanding DNA Posters Posted on 2012/05/22 by admin Doodle release date: April 25, 2003 – Global Doodle Artist: Dennis Hwang (click to see more by this artist) product tags: google doodles, 50th anniversary of understanding dna, google, search engine, official google, drawing, sketch, doodle, global, 2003, dennis, discovery, dna, posters,