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Question-1
1:2:1 ratio suggests
(A)
Linkage
(B)
Dihybrid cross
(C)
Monohybrid cross
(D)
Incomplete dominance
Question-2
If a homozygous red flowered plant is crossed with a homozygous white flowered plant, the offsprings will be
(A)
All red flowered
(B)
All white flowered
(C)
Half red flowered
(D)
Half white flowered
Question-3
A plant of F1 ? generation with genotype ?AABbCc? on selfing produces which of the following phenotypic ratio in F2 ? generation?
(A)
1:1
(B)
3:1
(C)
9:3:3:1
(D)
27:9:3:1
Question-4
In F2 generation, how many types of seeds were obtained by mendal in his original work?
(A)
One type
(B)
Two types
(C)
Four types
(D)
Seven types
Question-5
Law of independent assortment was proposed by
(A)
Mendel
(B)
Linnaeus
(C)
Robert Hook
(D)
Melvin Kelvin
Question-6
In monohybrid cross, the genotypic ratio of offsprings is ?
(A)
3:1
(B)
4:0
(C)
1:2:1
(D)
2:1:1
Question-7
An externally observable characters of an individual are called
(A)
Phenotype
(B)
Genotype
(C)
Homozygous
(D)
Heterozygous
Question-8
Mendel's dihybrid cross ratio is
(A)
9:3:3:1
(B)
1:2:1
(C)
12:3:1
(D)
15:1
Question-9
The ratio of supplementary gene are
(A)
9:7
(B)
9:3:4
(C)
12:3:1
(D)
9:3:3:1
Question-10
If a cross between two plants give 50% tall and 50% dwarf progeny, then the parents genotypes are
(A)
Tt x Tt
(B)
Tt x tt
(C)
TT x tt
(D)
TT x Tt
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Plus 2 Biology Science
ICSE/ISC
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