DNA Structure

DNA Structure - DNA Structure DNA, the substance of...

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DNA Structure DNA, the substance of inheritance Hereditary information Is encoded in the chemical language of DNA and reproduced in all organisms It is the DNA program That directs the development of many different types of traits
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DNA: Polymer of 4 Nucleotides How do we know DNA is the hereditary information? Hershey-Chase Experiment Phage: Virus that infects bacteria 16_02HersheyChaseExp_A.swf
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Structural Studies of DNA Maurice Wilkins and Rosalind Franklin Were using a technique called X-ray crystallography to study molecular structure Rosalind Franklin Produced a picture of the DNA molecule using this technique (a) Rosalind Franklin Franklin’s X-ray diffraction Photograph of DNA (b) Figure 16.6 a, b
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DNA is a Double Helix Watson and Crick deduced that DNA was a double helix Through observations of the X-ray crystallographic images of DNA Figure 16.7a, c C T A A T C G G C A C G A T A T A T T A C T A 0.34 nm 3.4 nm (a) Key features of DNA structure G 1 nm G (c) Space-filling model T
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Erwin Chargaff analyzed the base composition of DNA From a number of different organisms In 1947, Chargaff reported That DNA composition varies from one
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DNA Structure - DNA Structure DNA, the substance of...

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