NEET UG BIOLOGY MCQ: BIOMOLECULES

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If a B-DNA contains 40% thymine then calculate the sum total of thymine and guanine.

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Correct option: D

0.5

Option D (0.5) is correct because in B-DNA, A=T and G=C. If T is 40%, then A is also 40%. Therefore, G+C = 100% - 80% = 20%, so G=C=10%. Thus, T+G = 40% + 10% = 50% or 0.5.

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