Which of the following sets of base composition data is consistent with the double helix nature of DNA molecules?

Question

Quizplus · Accepted Answer

The base pairing in DNA molecules is A-T and C-G. Therefore, the amount of A must be equal to the amount of T, and the amount of C must be equal to the amount of G for the double helix structure to be maintained. Option B is not possible as it violates the base pairing law. Option C is possible, but it only accounts for 30% of the bases, and so it is not sufficient information. Option A is not possible because it would result in the double helix structure being too loose. Thus, option D (35% A and 15% C, or 35% T and 15% G) is the most likely to be consistent with the double helix structure of DNA molecules.

Which of the Following Sets of Base Composition Data Is