BCECE Medical BCECE Medical Solved Papers-2014

  • question_answer
    DNA element with ability to change its position is called

    A)  cistron

    B)  transposon

    C)  intron

    D)  recon

    Correct Answer: B

    Solution :

    Transposon is a DNA segment or genetic element moving from one chromosome to another. The term was introduced by RW Hedges and A E Jacob in (1974) to controlling elements or jumping genes, discovered by Barbara McClintock (1983) in maize. Cistron is the functional unit of DNA molecule, it codes for a particular gene product. Recon is the cross over unit or it is segment of DNA, which participates in crossing over. Introns are the interrupted genes or those regions of a gene, which are non-coding sequences and get removed during splicing and processing.


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