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MDCAT Biology Chapter 8 Evolution Online Test MCQs With Answers
Question # 1
The two linked genes A and B with a 30% recombination frequency must be
Choose an answer
15 units apart
30 units apart
60 units apart
90 units apart
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Question # 2
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 # 3
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 # 4
Genes for alpha and beta chains of hemoglobin are found on which chromosomes?
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Chromosome 16 alpha; chromosome 11 beta
Chromosome 11 alpha; chromosome 16 beta
Chromosome 11
Chromosome 16
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Question # 5
There are ________ total possible genotypes of blood group ABO system
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3
4
6
7
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Question # 6
Sickle cell mutation affects
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One beta chain
Both beta chains
Only alpha chain
None of the alpha or beta chain
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Question # 7
Which of the following traist is transmitted directly from an affected to only its sons?
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autosomal
X-linked
Y-linked
X and Y linked
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Question # 8
Bilirubin
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Turns skin Yellow
Damages brain cells
Causes jaundice
All of these
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Question # 9
A blue cone monochormate
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Can perceivetwo colours
Can't perceiveany colour
Can perceive only blue colour
Can perceive only red colour
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Question # 10
Pseudo-autosomal genes are present on
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X-chromosome
Y-chromosome
Both a & b
Autosomes
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Question # 11
In case of sickle cell anemia, in place of glutamic acid, _________ is found
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Histidine
Valine
Proline
Leucine
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Question # 12
Degenerated testes are present in abdomen in which of these cases
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Down's syndrome
Klinefelter's sysndrome
Turner's syndrome
Testicular ferminization
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Question # 13
Mutation of one or two N-bases is
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Inversion
Point mutation
Deletion
Chromosomal aberrations
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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
Mutation may be caused by
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Chemicals
Radiations
Mutagens
All of these
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Question # 16
Which can convert glucose to glucose 6 phosphate
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Hexokinase
Glucokinase
Phospho fructokinase
Both a & b
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Question # 17
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 # 18
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 # 19
The chances of which hemophilia is equal in males & females
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A
B
C
All
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Question # 20
Point mutation occurs in
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Sickle cell anemia
Phenylketonuria
Alkaptonuria
All
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