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KVPY Sample Paper KVPY Stream-SX Model Paper-22

  • question_answer
    If one strand of DNA has the sequence ATGCTTGA, the sequence in the complementary strand would be

    A) TCCGAACT

    B) TACGTAGT

    C) TACGAACT

    D) TACGTAGT

    Correct Answer: C

    Solution :

    In DNA, adenine [A] and thymine (T) are joined by two hydrogen bonds while guanine (G) and cytosine [C] are joined by three hydrogen bonds. No other combination of four bases is possible. Hence, the sequence of complementary strand is TACGAACT.


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