Question:medium

Which of the following statements are true for DNA: A. DNA specimens isolated from different tissues of the same species have same base composition. B. DNA extracted from similar species have same base composition. C. Adenine residue can be different from thymine residues. D. Guanine residues are always equal to cytosine residues. E. Base composition cannot be used to classify organism.

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For double-stranded DNA, remember Chargaff's rule: \(A=T\) and \(G=C\). DNA base composition is useful for comparison and classification.

Updated On: May 18, 2026

A, B, D and E only
A, B and D only
A, B, C and E only
A, B, C and D only

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The Correct Option is B

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