Gentics and Evoloution MCQ question and answer with solution

Section 1 Section 2 Section 3 Section 4 Section 5 Section 6

81.
The biological species concept of organisms is based on

A. morphological traits

B. evolutionary traits

C. reproductive isolation

D. geographical isolation

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82.
The process of isolating a desirable homozygous individual from the mixed population and multiplying the same without contamination to release as a new variety is known as

A. Pure-line selection

B. Clonal selection

C. Mass selection

D. Natural selection

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83.
In Asparagus

A. The maleness is dominant over femaleness and male plants are ordinarily homozygous

B. The femaleness is dominant over maleness and the male plants are ordinarily heterozygous

C. The femaleness is dominant over maleness and the male plants are ordinarily homozygous

D. The maleness is dominant over femaleness and the male plants are ordinarily heterozygous

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84.
Which of the following is responsible forn controlling hereditary characters of the living cells?

A. Enzyme

B. Hormone

C. RNA

D. DNA

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85.
Match List-I (Operons) with List-II (Number of structural genes) and select the correct answer:

List-I List-II

a. Ara Operon of E. coli 1. 9 structural genes

b. His Operon of Salmonella typhimurium 2. 4 structural genes

c. Trp Operon of E. coli 3. 5 structural genes

d. Leu Operon 4. 3 structural genes

A. a-1, b-3, c-4, d-2

B. a-2, b-4, c-1, d-3

C. a-3, b-1, c-4, d-2

D. a-4, b-1, c-3, d-2

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86.
Study the following statements.
1. In a monohybrid cross, we study two characters.
2. Garden pea (Pisum sativum) reproduces asexually in nature.
3. In incomplete dominance, one gene (dominant) is mixed with the other gene (recessive).
4. Mendel choose seven visible characters, each with two contrasting forms.
Which of the statements given above is are false?

A. 1, 2 and 3

B. 1 and 2

C. 2 and 3

D. 1, 3 and 4

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87.
A true species in Mauritius failed to reproduce because of the extinction of a fruit eating bird. Which one of the following was that bird?

A. Dove

B. Dodo

C. Condor

D. Skua

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88.
Point mutation arises due to change in

A. single base of DNA

B. single base pair of DNA

C. segment of DNA

D. double base pair of DNA

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89.
Organs those which were functional at one time but iater on during the course of evolution lost their function are called

A. Vestigeal organs

B. Analogous organs

C. Homologous organs

D. None of the above

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90.
Dinosaurs were

A. Cenozoic reptiles

B. Mesozoic birds

C. Paleozoic amphibians

D. Mesozoic reptiles

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1 2 3 4 5 6 7 8 9 10

List-I	List-II
a. Ara Operon of E. coli	1. 9 structural genes
b. His Operon of Salmonella typhimurium	2. 4 structural genes
c. Trp Operon of E. coli	3. 5 structural genes
d. Leu Operon	4. 3 structural genes

Gentics and Evoloution MCQ question and answer with solution | Biology Gk MCQs

81. The biological species concept of organisms is based on

Answer & Solution

82. The process of isolating a desirable homozygous individual from the mixed population and multiplying the same without contamination to release as a new variety is known as

Answer & Solution

83. In Asparagus

Answer & Solution

84. Which of the following is responsible forn controlling hereditary characters of the living cells?

Answer & Solution

Answer & Solution

Answer & Solution

87. A true species in Mauritius failed to reproduce because of the extinction of a fruit eating bird. Which one of the following was that bird?

Answer & Solution

88. Point mutation arises due to change in

Answer & Solution

89. Organs those which were functional at one time but iater on during the course of evolution lost their function are called

Answer & Solution

90. Dinosaurs were

Answer & Solution

Read More Section(Gentics and Evoloution)

81.
The biological species concept of organisms is based on

82.
The process of isolating a desirable homozygous individual from the mixed population and multiplying the same without contamination to release as a new variety is known as

83.
In Asparagus

84.
Which of the following is responsible forn controlling hereditary characters of the living cells?

87.
A true species in Mauritius failed to reproduce because of the extinction of a fruit eating bird. Which one of the following was that bird?

88.
Point mutation arises due to change in

89.
Organs those which were functional at one time but iater on during the course of evolution lost their function are called

90.
Dinosaurs were