1
AIPMT 2009
MCQ (Single Correct Answer)
+4
-1
Sickle-cell anemia is :
A
Caused by substitute of valine by glutamic acid in the beta globin chain of haemoglobin
B
An autosomal linked dominant trait
C
Caused by a change in a single base pair of DNA
D
Characterized by elongated sickle like RBCs with a nucleus
2
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
3
AIPMT 2009
MCQ (Single Correct Answer)
+4
-1
The most popularly known blood grouping is the ABO grouping. It is named ABO and not ABC, because "O" in it refers to having :
A
Other antigens besides A and B on RBCs
B
No antigens A and B on RBCs
C
Overdominance of this type on the genes for A and B types
D
One antibody only-either anti-A and anti-B on the RBCs
4
AIPMT 2009
MCQ (Single Correct Answer)
+4
-1
Study the pedigree chart given below : AIPMT 2009 Biology - Principles of Inheritance and Variation Question 115 English What does it show ?
A
Inheritance of a recessive sex-linked disease like haemophilia
B
Inheritance of a sex-linked inborn error of metabolism like phenylketonuria
C
The pedigree chart is wrong as this is not possible
D
Inheritance of a condition like phenylketonuria as an autosomal recessive trait
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