1
AIPMT 2006
MCQ (Single Correct Answer)
+4
-1
Phenotype of an organism is the result of-
A
Environmental changes and sexual dimorphism
B
Cytoplasmic effects and nutrition
C
Genotype and environment interactions
D
Mutations and linkages
2
AIPMT 2006
MCQ (Single Correct Answer)
+4
-1
Sickle cell anaemia has not been eliminated from the African population because-
A
It is not a fatal disease
B
It is controlled by dominant genes
C
It is controlled by recessive genes
D
It provides immunity against malaria
3
AIPMT 2006
MCQ (Single Correct Answer)
+4
-1
Cri-du-chat syndrome in humans is caused by the-
A
Loss of half of the long arm of chromosome 5
B
Loss of half of the short arm of chromosome 5
C
Trisomy of 21st chromosome
D
Fertilization of an XX egg by a normal Y-bearing sperm
4
AIPMT 2006
MCQ (Single Correct Answer)
+4
-1
Which one of the following is an example of polygenic inheritance ?
A
Skin colour in humans
B
Pod shape in garden pea
C
Production of male honey bee
D
Flower colour in Mirabilis jalapa

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