Question:
If adenine is 31% in DNA, calculate the percentage of cytosine. Explain briefly.
If adenine is 31% in DNA, calculate the percentage of cytosine. Explain briefly.
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Chargaff’s rule ensures complementary base pairing, maintaining DNA structure and accurate replication during cell division.
Updated On: Jan 13, 2026
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Solution and Explanation
Adenine pairs with thymine (31% each), totaling 62\%. Cytosine and guanine share the remaining 38%. Therefore, cytosine is 19%, following Chargaff’s rule, where purines (adenine, guanine) always pair with pyrimidines (thymine, cytosine).
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