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Question
Who amongst the following scientists had no contribution in the development of the double helix model for the structure of DNA?
Who amongst the following scientists had no contribution in the development of the double helix model for the structure of DNA?
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Solution
The correct option is C Meselson and Stahl
Rosalind Franklin and Maurice Wilkins:
Maurice Wilkins and Rosalind Franklin obtained the X-ray diffraction pattern of DNA. Based on the results of these X-ray diffraction patterns, Watson and Crick developed the double helical structure of DNA.
Erwin Chargaff:
Erwin Chargaff proposed the Chargaff’s rule, the rules that support the double helix DNA structure. He said that the ratio of purines and pyrimidines remain constant in the DNA.
Meselson and Stahl:
Meselson and Stahl gave experimental proof for the semi conservative nature of DNA replication. They had not contributed in deducing the double helical structure of DNA.
Final answer:d. Meselson and Stahl
Rosalind Franklin and Maurice Wilkins:
Maurice Wilkins and Rosalind Franklin obtained the X-ray diffraction pattern of DNA. Based on the results of these X-ray diffraction patterns, Watson and Crick developed the double helical structure of DNA.
Erwin Chargaff:
Erwin Chargaff proposed the Chargaff’s rule, the rules that support the double helix DNA structure. He said that the ratio of purines and pyrimidines remain constant in the DNA.
Meselson and Stahl:
Meselson and Stahl gave experimental proof for the semi conservative nature of DNA replication. They had not contributed in deducing the double helical structure of DNA.
Final answer:d. Meselson and Stahl
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