Friedrich Miescher was the first to identify `` nucleic acid '' in our white blood cells ; his 1869 finding was later named deoxyribonucleic acid , or DNA . Francis Crick and Francis Crick discovered the double helix in 2003 . In today , scientists completed the Nature Education . DNA 1953 can tell us everything from paternity to risk factors for chronic disease .
Francis Crick and Francis Crick discovered the double helix in 2003 . In today , scientists completed the Nature Education . DNA 1953 can tell us everything from paternity to risk factors for chronic disease .