Seventy years ago, on February 28.1953, Cambridge University scientists James D. Watson and Francis Crick announced that they had determined the double-helix structure of DNA (short for deoxyribonucleic acid). DNA was discovered in 1869 but its significant genetic inheritance role was not demonstrated until 1943. Many other Scientists were working on figuring out the structure of DNA. Read more
Source: NIH National Library of Medicine