1
AIPMT 2005
MCQ (Single Correct Answer)
+4
-1
A woman with normal vision, but whose father was colour bind, marries a colour blind man. Suppose that the fourth child of this couple was a boy. This boy -
A
May be colour blind or may be normal vision
B
Must have normal colour vision
C
Must be colour blind
D
Will be partially colour blind since he is heterozygous for the colour blind mutant allele.
2
AIPMT 2005
MCQ (Single Correct Answer)
+4
-1
E. coli cells with a mustard z gene of the lac operon cannot grow in medium containing only lactose as the source of energy because -
A
They cannot transport lactose from the medium into the cell
B
They cannot synthesize functional beta galactosidase
C
In the presence of glucose, E. coli cells do not utilize lactose
D
The lac operon is constitutively active in these cells
3
AIPMT 2005
MCQ (Single Correct Answer)
+4
-1
Telomerase is an enzyme which is a -
A
RNA
B
Repetitive DNA
C
Simple protein
D
Ribonucleoprotein
4
AIPMT 2005
MCQ (Single Correct Answer)
+4
-1
Using imprints from a plate with complete medium and carrying bacterial colonies, you can select streptomycin resistant mutants and prove that such mutations do not originates as adaptation. These imprints need to be used -
A
On plates with minimal medium
B
Only on plates with streptomycin
C
Only on plates without streptomycin
D
On plates with and without streptomycin
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