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Biology · 2025 · 1 mark
CBSE 2025 · Region 5 · Set 2 · Q12
In a DNA, percentage of thymine is 20. What is the percentage of Guanine?
In a DNA, percentage of thymine is $\displaystyle 20$ . What is the percentage of Guanine ?
Official answer
(B)
$\displaystyle 30$%
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CBSE Class 12 Biology past-paper question from the 2025 board exam, with the answer as CBSE’s own marking scheme gives it. Where our answers come from.