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 structure based on the tetranujnfz3g/0mo.b3z(sx1l fd(fu 3ebs b5cleotide hypzd,l(: vmcz 5pothesis proposed by Levene that DNA was made up of equal amounts of adenine, guanine, cytosine and thymine. Thl(v :zcp zm5,dis 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 th)qi*.8rtkk6ks+kqwskf 3*bjb l/ h+g e proportions of adenine (A) and thymil6i.8kqsbh t+wk/ qkj+ krks b3*)*gfne (T) are the same, as are the proportions of guanine (G) and cytosine (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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