1
AIPMT 2012 Mains
MCQ (Single Correct Answer)
+4
-1
In genetic engineering, the antibiotics are used
A
As sequences from where replication starts
B
As selectable markers
C
To keep the cultures free of infection
D
To select healthy vectors
2
AIPMT 2012 Mains
MCQ (Single Correct Answer)
+4
-1
The figure below shows three steps (A, B, C) of Polymerase Chain Reaction (PCR). Select the option giving correct identification together with what it represents ?
AIPMT 2012 Mains Biology - Biotechnology: Principles and Processes Question 60 English
A
C - Extension in the presence of heat stable DNA polymerase
B
B - Denaturation at a temperature of about 98ºC separating the two DNA strands
C
A - Denaturation at a temperature of about 50ºC
D
A - Annealing with two sets of primers
3
AIPMT 2012 Prelims
MCQ (Single Correct Answer)
+4
-1
Which part would be most suitable for raising virus free plants for microporpagation ?
A
Vascular tissue
B
Node
C
Bark
D
Meristem
4
AIPMT 2012 Prelims
MCQ (Single Correct Answer)
+4
-1
The figure below is the diagrammatic respesentation o the E.Coli vector pBR 322. Which one of the given options correctly identifies its certain component(s) ? AIPMT 2012 Prelims Biology - Biotechnology: Principles and Processes Question 68 English
A
ori- original restriction enzyme
B
ampR, tetR-antibiotic resistance genes
C
rop-reduced osmotic pressure
D
Hind III, EcoRI-selectable markers
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