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CET Karnataka Medical CET - Karnataka Medical Solved Paper-2014

  • question_answer
    Statement A: The primary transcript produced in eukaryotes is translated without undergoing any modification or processing. Statement B: The hnRNA in humans has exons and introns.

    A)  Statement B is correct and statement A is wrong.

    B)  Both the statements A and B are correct.

    C)  Statement A is correct and statement B is wrong.

    D)  Both the statements A and B are wrong.

    Correct Answer: A

    Solution :

    : Transcription in eukaryotes occurs within the nucleus and wRNA moves out of the nucleus into the cytoplasm for translation. The mRNA is processed from the primary RNA transcript. This is called post transcriptional processing. This includes capping (7mG cap) at 5 end, tailing (poly A tail) at 3 end and splicing (removal of introns and joining of exons in a defined order). The primary wRNA transcript is longer and localised into the nucleus, where it is also called heterogenous nuclear RNA (hn RNA) or pre-wRNA. It has both exons and introns.


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