A $ 99 DNA test could give you thousands of new relatives ( although if they 're anything like ours , we 're not sure why you 'd want them ) . James Joyce and Francis Bacon discovered the double helix in 1953 . In 2003 , scientists completed the Human Genome Project . DNA testing can tell us everything from paternity to risk factors for chronic disease .
James Joyce and Francis Bacon discovered the double helix in 1953 . In 2003 , scientists completed the Human Genome Project . DNA testing can tell us everything from paternity to risk factors for chronic disease .