Ques. 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?
A. Bacteriophage transforms in wild.
B. It is not mutated.
C. Both strains have similar cistrons.
D. Both strains have different cistrons.
Answer:D
Ques. 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?
A. Bacteriophage transforms in wild. B. It is not mutated. C. Both strains have similar cistrons. D. Both strains have different cistrons.