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MDCAT Biology Chapter 9 Life process in Animals & Plants Online Test MCQs With Answers
Question # 1
Pseudo-autosomal genes are present on
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X-chromosome
Y-chromosome
Both a & b
Autosomes
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Question # 2
When a single gene has multiple phenotypic effects, the phenomenon is called:
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condominance
epistasis
pleiotropy
sex-linkage
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Question # 3
What will be the risk of heamophilia in sons if father is haemophilic and mother is normal
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0%
20%
25%
50%
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Question # 4
Color blindness, haemophilia and gout form linkage group onj
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Chromosome 9
Chromosome 19
x-chromosome
y-chromosome
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Question # 5
The chances of which hemophilia is equal in males & females
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A
B
C
All
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Question # 6
SRY in located at the tip of
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Short arm of X-chromosome
Short arm of Y-chromosome
Long arm of Y-chromosome
Long arm of X-chromosome
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Question # 7
When a haemophilic carrier woman marries a normal man, who among her offspring may be affected
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all her children
all her daughter
half of her daughter
half of her sons
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Question # 8
Two parents of blood group A had a child of blood group O, what will be percentage chances of having such child again
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25%
50%
75%
None
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Question # 9
Genes can be mapped on chromosomes on the basis of
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Sex linkage
Assortment
Recombination frequency
Gene sequencing
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Question # 10
In sickle cell beta chain glutamic acid is replaced by valine which is sixth amino acid from
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N-Terminal
C-Terminal
R-Terminal
H-Terminal
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Question # 11
What are chances for having Rh-ve baby if one parent is Rh+ve and (homozygous) and other is Rh-ve
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25%
50%
100%
0%
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Question # 12
If six cells out of 10, do crossing over what will be percentage of cross over gametes
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60%
30%
40%
50%
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Question # 13
A change in one or more bases of DNA, which results in the formation of an abnormal protein is
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Moulting
Transformation
Mutation
Fission
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Question # 14
Which phenomenon reduces the chances of genetic recombination and variations among offspring ?
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linkage
crossing over
independent assortment
dominance
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Question # 15
There are ________ total possible genotypes of blood group ABO system
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3
4
6
7
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Question # 16
How may gene pairs contribute to the wheat grain colour?
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one
two
three
four
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Question # 17
What is the probability of having albino child if father and mother both are carrier(Aa)
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25%
30%
50%
75%
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Question # 18
Rh factor is encoded by
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2 genes which occupy 3 loci
3 genes which occupy 2 loci
2 genes which occupy 2 loci
3 genes which occupy 3 loci
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Question # 19
Mutatuons are inherited only if they occur in the
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Gland cells
Gametes
Muscle cells
Somatic cells
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Question # 20
A heterrozygote offspring quantitatively exceeds the phenotypic expression of both the homozygote parents due to:
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dominance
incomplete dominance
over dominance
codominance
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Question # 21
The two linked genes A and B with a 30% recombination frequency must be
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15 units apart
30 units apart
60 units apart
90 units apart
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