2. Solved Papers
  3. BHU PMT

BHU PMT BHU PMT (Screening) Solved Paper-2010

  • question_answer
    A mutant strain of T4-bacteriophage \[\text{R-II,}\] fails to lyse the E.coli but when two strains \[\text{R-I}{{\text{I}}^{\text{X}}}\] and \[\text{R-I}{{\text{I}}^{y}}\] are mixed then they lyse the E.coli. What may be the possible reason?

    A)  Bacteriophage transforms in wild

    B)  It is not mutated

    C)  Both strains have similar cistrons

    D)  Both strains have different cistrons

    Correct Answer: D

    Solution :

                     The enzymes required for lysing E. coli could not be synthesised by the mutant strain. Two different strains had cistrons for synthesizing two different enzymes which acted together.


You need to login to perform this action.
You will be redirected in 3 sec spinner