DNA was first identified in the late 1860s by Swiss chemist Friedrich Miescher. Then, in the decades following Miescher's discovery, other scientists--notably, Phoebus Levene and Erwin Chargaff ...

DNA, a substance of high molecular weight ... In 1949 another Austrian refugee scientist, Erwin Chargaff, working at the Columbia College of Physicians and Surgeons in New York, was one of ...

Scientists still needed to figure ... In 1950, biochemist Erwin Chargaff found that the arrangement of nitrogen bases in DNA varied widely, but the amount of certain bases always occurred in ...