1
AIPMT 2006
MCQ (Single Correct Answer)
+4
-1
In Mendel's experiments with garden pea, round seed shape (RR) was dominant over wrinkled seeds (rr), yellow cotyledon (YY) was dominant over green cotyledon (yy). What are the expected phenotypes in the F2 generation of the cross RRYY × rryy ?
A
Round seeds with yellow cotyledons, and wrinkled seeds with yellow cotyledons
B
Only wrinkled seeds with green cotyledons
C
Only wrinkled seeds with yellow cotyledons
D
Only round seeds with green cotyledons
2
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
3
AIPMT 2006
MCQ (Single Correct Answer)
+4
-1
How many different kinds of gametes will be produced by a plant having the genotype AABbCC ?
A
Two
B
Nine
C
Four
D
Three
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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