Practice question

MCQ

Question

The base sequence of a short piece of DNA is AGCTTACG. During replication, a transition mutation occurs in the complementary strand synthesized on this piece of DNA. Which of the following is mutated complementary strand?

Options

Choose one · Correct answer highlighted

T C G A A T C G T C G A A T G C C G C G A G C T Correct U C G A A G U C

Explanation

This outcome reflects nucleic acid structure and recombination, where hairpin formation, Holliday junction resolution and translation control ensure fidelity. Option C captures this correctly because it matches molecular mechanisms, consistent with textbook descriptions and experimental observations in molecular biology.

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