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1) Describe the evidence that Watson and Crick used to come upwiththe double helix model for DNA.

2) How does the double-helical structure of DNA relate to itsfunction?

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Reid Wolff
Reid WolffLv2
28 Sep 2019

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Related questions

Watson and Crick proposed the double helix model in 1953. Kornberg discovered the DNA polymerase I in 1958. However, Kornberg got his Nobel prize in 1959 and Watson-Crick got theirs in 1963. Which fo the following explanations is most scientific?

Kornberg’s discovery partially proves Watson-Crick’s hypothesis ody>

Kornberg was the supervisor of Watson and Crick

. Kornberg’s discovery is more important than Watson-Crick’s

DNA polymerases are more important than DNA for cells

1) The strongly acidic nature of DNA poses a problem. Why do Watson and Crick think that the DNA “dyad”, formed by hybridization of two negatively charged molecules, will be stable?

2) Watson and Crick refer to a model proposed by Pauling and Cory. Pauling and Cory proposed a triple helix with phosphates in the center (triangles in the figure below), and bases radiating outwards. A figure from their paper, viewing this structure end on, is shown below. List at least three different aspects of this model that are chemically improbable, or fail to accommodate information about DNA that was available in 1953, when the Pauling and Cory and Watson and Crick models were published. For each problem, explain if, and how, the Watson and Crick model overcomes the issue that you have identified. Figure 6, reproduced from:

 3) What are tautomeric forms, and why did they pose a problem for the Watson and Crick model? Do you think that Watson and Crick adequately addressed the problem of tautomers?

4) RNA and DNA have different helical conformations. Why do Watson and Crick suggest that this is necessary?

5) Did Watson and Crick say too much or too little about the process of replication? Explain your view on this.

Briefly describe the Watson and Crick structure of DNA and list the evidence used in proposing this structure.

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