1
AIPMT 2007
MCQ (Single Correct Answer)
+4
-1
In pea plants, yellow seeds are dominant to green. If a heterozygous yellow seeded plant is crossed with a green seeded plant, what ratio of yellow and green seeded plants would you expect in F1 generation ?
A
9 : 1
B
3 : 1
C
50 : 50
D
1 : 3
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
Test cross involves-
A
Crossing between two F1 hybrids
B
Crossing the F1 hybrid with a double recessive genotype
C
Crossing between two genotypes with recessive trait
D
Crossing between two genotypes with dominant trait
4
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

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