1
AIPMT 2009
MCQ (Single Correct Answer)
+4
-1
The genetic defect-adenosine deaminase (ADA) deficiency may be cured permanently by
A
Introducing bone marrow cells producing ADA into cells at early embryonic stages
B
Periodic infusion of genetically engineered lymphocytes having functional ADA cDNA
C
Administering adenosine deaminase activators
D
Enzyme replacement therapy
2
AIPMT 2008
MCQ (Single Correct Answer)
+4
-1
Which one of the following conditions in humans is correctly matched with its chromosomal abnormality/linkage?
A
Klinfelter's syndrome — 44 autosomes + XXY
B
Colour-blindness — Y-linked
C
Down syndrome — 44 autosomes + XO
D
Erythroblastosis foetalis — X-linked
3
AIPMT 2008
MCQ (Single Correct Answer)
+4
-1
Haploids are more suitable for mutation studies than the diploids. This is because:
A
all mutations, whether dominant or recessive are expressed in haploids
B
mutagens penetrate in haploids more effectively than in diploids
C
haploids are reproductively more stable than diploids
D
haploids are more abundant in nature than diploids
4
AIPMT 2007
MCQ (Single Correct Answer)
+4
-1
In the hexaploid wheat, the haploid(n) and basic(x) numbers of chromosomes are :
A
n = 21 and x = 14
B
n = 21 and x = 21
C
n = 7 and x = 21
D
n = 21 and x = 7

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