NEET Sample Paper NEET Sample Test Paper-19

  • question_answer The segment of DNA which participates in crossing over is

    A)  Recon                        

    B)  Operon

    C)  Muton                        

    D)  Cistron

    Correct Answer: A

    Solution :

    Cistron or functional gene or gene in real sense: Benzer (1955) coined the term cistron. Cistron is that particular length of DNA which is capable of producing a protein molecule or polypeptide chain or enzyme molecule. Muton or unit of mutation: Muton is that length of DNA which is capable of undergoing mutation. Muton is having one or two pairs of nucleotide. Recon: Recon is that length of DNA which is capable of undergoing crossing over or capable of recombination. Recon is having one or two pairs of nucleotides. Operon: Operon is the combination of operator gene and sequence of structure genes which act together as a unit. Therefore, it is composed of several genes. The effect of operator gene may be additive or suppressive. Hence, the correct option is [a].

adversite


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