who was it that described the structure of dna
James Watson and Francis Crick James Watson Francis Crick
title: Sven Furberg text: Sven Furberg Sven Verner Furberg (16 April 1920 – 15 March 1983) was a Norwegian chemist, biologist and crystallographer who first proposed the helical structure of DNA. Furberg suggested this structure in 1949, which he referred to as a "zig-zag" chain. In 1952, his structure of DNA was published in the journal Acta Chemica Scandinavica. In this paper, he deduced that DNA forms a double helix from the crystal structure and density value of nucleosides and other related molecules. A year later, this paper was cited by James Watson and Francis Crick in "Molecular Structure of Nucleic Acids: A Structure title: Sven Furberg text: for Deoxyribose Nucleic Acid". Sven Furberg Sven Verner Furberg (16 April 1920 – 15 March 1983) was a Norwegian chemist, biologist and crystallographer who first proposed the helical structure of DNA. Furberg suggested this structure in 1949, which he referred to as a "zig-zag" chain. In 1952, his structure of DNA was published in the journal Acta Chemica Scandinavica. In this paper, he deduced that DNA forms a double helix from the crystal structure and density value of nucleosides and other related molecules. A year later, this paper was cited by James Watson and Francis Crick in "Molecular Structure of title: Rosalind Franklin and DNA text: Rosalind Franklin and DNA Rosalind Franklin and DNA is a biography of an English chemist Rosalind Franklin (1920–1958) written by her American friend Anne Sayre in 1975. Franklin was a physical chemist who made pivotal research in the discovery of the structure of DNA, known as "the most important discovery" in biology. DNA itself had become "life's most famous molecule". While working at the King's College London in 1951, she discovered two types of DNA called A-DNA and B-DNA. Her X-ray images of DNA indicated helical structure. Her X-ray image of B-DNA (called Photo 51) taken in 1952 became the title: DNA text: coworkers Colin MacLeod and Maclyn McCarty, identified DNA as the transforming principle, supporting Griffith's suggestion (Avery–MacLeod–McCarty experiment). DNA's role in heredity was confirmed in 1952 when Alfred Hershey and Martha Chase in the Hershey–Chase experiment showed that DNA is the genetic material of the T2 phage. Late in 1951, Francis Crick started working with James Watson at the Cavendish Laboratory within the University of Cambridge. In 1953, Watson and Crick suggested what is now accepted as the first correct double-helix model of DNA structure in the journal "Nature". Their double-helix, molecular model of DNA was then based on one X-ray title: DNA text: diffraction image (labeled as "Photo 51") taken by Rosalind Franklin and Raymond Gosling in May 1952, and the information that the DNA bases are paired. On 28 February 1953 Crick interrupted patrons' lunchtime at The Eagle pub in Cambridge to announce that he and Watson had "discovered the secret of life". Months earlier, in February 1953, Linus Pauling and Robert Corey proposed a model for nucleic acids containing three intertwined chains, with the phosphates near the axis, and the bases on the outside. Experimental evidence supporting the Watson and Crick model was published in a series of five articles in