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ERIC Number: EJ770222
Record Type: Journal
Publication Date: 2007-May
Pages: 7
Abstractor: Author
ISSN: ISSN-0021-9584
X-Ray Diffraction and the Discovery of the Structure of DNA
Crouse, David T.
Journal of Chemical Education, v84 n5 p803 May 2007
A method is described for teaching the analysis of X-ray diffraction of DNA through a series of steps utilizing the original methods used by James Watson, Francis Crick, Maurice Wilkins and Rosalind Franklin. The X-ray diffraction pattern led to the conclusion of the basic helical structure of DNA and its dimensions while basic chemical principles led to verify the structure along with the counter-oriented nature of the two helices, the hydrogen bonding between purines (adenine and guanine) and pyrimidines (thymine and cytosine), and the implications to gene replication.
Division of Chemical Education of the American Chemical Society. Subscription Department, P.O. Box 1267, Bellmawr, NJ 08099-1267. Tel: 800-691-9846; Tel: 856-931-5825; Fax: 856-931-4115; e-mail:; Web site:
Publication Type: Journal Articles; Reports - Descriptive
Education Level: Higher Education
Audience: Teachers
Language: English
Sponsor: N/A
Authoring Institution: N/A