DNA structure revealed
On April 25 James D Watson and Francis Crick, two Cambridge University scientists, describe the structure of a chemical called deoxyribonucleic acid in Nature magazine. DNA is the material that makes up genes which pass hereditary characteristics from parent to child. Crick and Watson begin their article: "We wish to suggest a structure for the salt of deoxyribonucleic acid (DNA). This structure has novel features which are of considerable biological interest." DNA allowed the study of disease caused by defective genes.