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Molecular Basis of Inheritance question

2020 · Q49
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Molecular Basis of Inheritance question

2020 · Q49

NEETBiologyMolecular Basis of InheritanceMCQ+4 / −1
Which of the following statements is correct?
  1. A
    Adenine does not pair with thymine
  2. B
    Adenine pairs with thymine through one H-bond
  3. C
    Adenine pairs with thymine through two H-bonds
  4. D
    Adenine pairs with thymine through three H-bonds
View written solutionFree

Correct answer: C

Based on the observation of Erwin Chargaff that for a double stranded DNA, the ratios between Adenine and Thymine and Guanine and Cytosine are constant and equals one. Adenine pairs with thymine through two H-bonds i.e., A = T and guanine pairs with cytosine with three H-bonds.

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