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October 28, 2011 Biology 311C Lecture 27 • Hershey and Chase were able to distinguish bacteriophage DNA from protein by using 35C which in protein, but not DNA. • The composition of DNA is us varies between species. Regardless, there was a relationship. Percentages of the nitrogenous base pairs were always equal. • Chargaff’s date on base composition of DNA includes cells of individuals in a given species contained the same proportions of DNA bases. • Watson and Crick took all of Rosaline Frank’s preexisting data and built a model. • They found out that the backbone of DNA is sugar-phosphate. • They also figured out that within each whole turn, there are 10 base pairs. It measured 3.4 nm and figured out the antiparallel structure.
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This note was uploaded on 02/21/2012 for the course BIO 311 C taught by Professor Mcclelland during the Fall '09 term at University of Texas at Austin.
- Fall '09