A mutant strain of T4 - Bacteriophage, R-II, fails to lyse the E. coli but when two strains R-IIX and R-IIY are mixed then they lyse the E. coli. What may be the possible reason?
Correct answer: D. Both strains have different cistrons.
- A. Bacteriophage transforms in wild.
- B. It is not mutated.
- C. Both strains have similar cistrons.
- D. Both strains have different cistrons.
Explanation
A mutant strain of T4 - bacteriophage, RII, fails to lyse the E.coli but when two strains R-II (X) and R-IIY are mixed then they lyse the E.coli because both strains have different cistrons.
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