1
AIPMT 2001
MCQ (Single Correct Answer)
+4
-1
A mutant strain of T4 – Bacteriophage, R-II, fails to lyse the E-Coli but when two strains RIIX and R-IIY are mixed then they lyse the E.Coli. What may be the possible reason : -
A
Both strains have different cistrons
B
Both strains have simillar cistrons
C
It is not mutated
D
Bacteriophage transforms in wild
2
AIPMT 2001
MCQ (Single Correct Answer)
+4
-1
In lederberg's replica plating experiment what shall be used to obtain streptomycin resistant strain : -
A
Only minimal medium
B
Complete medium and streptomycine
C
Only complete medium
D
Minimal medium and streptomycine
3
AIPMT 2001
MCQ (Single Correct Answer)
+4
-1
Which of the following cut the DNA from specific places ?
A
Exonuclease
B
Alkaline phosphate
C
E.coli restriction endonuclease I
D
Ligase
4
AIPMT 2001
MCQ (Single Correct Answer)
+4
-1
Maximum number of bases in plasmids discovered so far : -
A
500 kilo base
B
5 kilo base
C
50 kilo base
D
5000 kilo base
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