THE MOLECULAR BASIS OF INHERITANCE
STRUCTURE OF NUCLEIC ACIDS
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Watson & Crick
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Hershey & Chase
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Linus Pauling
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Rosalind Franklin
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Chargaff
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Detailed explanation-1: -Suddenly, in the spring of 1953, Watson saw that the essential DNA components-four organic bases-must be linked in definite pairs. This discovery was the key factor that enabled Watson and Crick to formulate a molecular model for DNA-a double helix, which can be likened to a spiraling staircase or a twisting ladder.
Detailed explanation-2: -At King’s College London, Rosalind Franklin obtained images of DNA using X-ray crystallography, an idea first broached by Maurice Wilkins. Franklin’s images allowed James Watson and Francis Crick to create their famous two-strand, or double-helix, model.
Detailed explanation-3: -In Watson and Crick’s model, the two strands of the DNA double helix are held together by hydrogen bonds between nitrogenous bases on opposite strands. Each pair of bases lies flat, forming a “rung” on the ladder of the DNA molecule. Base pairs aren’t made up of just any combination of bases.