Unity and Diversity A.2 Nucleic Acids (id: 9f1d68d37)

本题目来源于试卷: Unity and Diversity A.2 Nucleic Acids，类别为 IB生物学

[单选题]
The diagram below shows the.om8. kmi0m ll:wnq9lr,c9bn stdyprmnlzno 57a 1cbj u h9.u 7 nj82jum64s56vructure based on the tetranucleotide hypothesis proposed by Levene that DNA was made up ou69snvbj8rc pjmj.ymhun6ud7zln 5a4o7251f equal amounts of adenine, guanine, cytosine and thymine. This hypothesis was a problem of induction, because it was based on a limited set of data. Subsequent evidence and data revealed a more complex and accurate understanding of the structure, leading to the falsification of the initial hypothesis.

A. Erwin Chargaff
B. Rosalind Franklin
C. Alfred Hershey
D. James Watson


参考答案:  A


本题详细解析:
Choice A is correct because Chargaff used paper chromatography to show that the88t m0 y)p aadks-wf3ap4fc0 j proportions of adenine (A) and thymine (T) are the same, as are the proportions of guanine (G) and cytosine8aya0p -dmkas34f)08tj fw pc (C). There are not equal proportions of A, T, G and C.

Franklin (Choice B) and Watson (Choice D) are credited for their contributions to the overall structure of DNA structure. Hershey (Choice C), along with Chase, is famous for his research which provided evidence for the idea that DNA, rather than protein, carries the genetic code.

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