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Question-1
Genetic variation arised by
(A)
Nucleous
(B)
Mutation
(C)
Recombination
(D)
Both 2 and 3
Question-2
The 1:2:1: ratio among pink flowers indicates the phenomenon of
(A)
Linkage
(B)
Dominance
(C)
Dihybrid cross
(D)
Incomplete dominance
Question-3
How many type of genotypes are formed in F2 progeny obtained from self pollination of a dihybrid F1?
(A)
9
(B)
6
(C)
3
(D)
1
Question-4
Mendel's dihybrid cross ratio is
(A)
9:3:3:1
(B)
1:2:1
(C)
12:3:1
(D)
15:1
Question-5
Pure line breed refers to
(A)
Linkage
(B)
Homozygosity
(C)
Hetrozygosity
(D)
Heterozygosity and linkage
Question-6
The scientist Hugo de vries worked on which of the following plant?
(A)
Pisum
(B)
Lathyrus
(C)
Mirabilis
(D)
Oenothera
Question-7
The normal phenotypic ratio of dihybrid cross is
(A)
3:1
(B)
9:3::4
(C)
12:3:1
(D)
9:3:3:1
Question-8
Any of a pair of characteristics may combine with either one of another pair is the statement for
(A)
Mutation
(B)
Hybrid vigour
(C)
Mendel'first law
(D)
Mendel's second law
Question-9
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-10
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
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Plus 2 Biology Science
ICSE/ISC
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