Gentics and Evoloution MCQ question and answer with solution

71

Who among the following adopted the term evolution to cover Darwin's notions as well as to include the conception which explains the entire process of change occurring in the universe?

A) Charles Lyell B) Georges Cuvier C) Herbert Spencer D) Robert Hooke

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Answer & Solution

Answer: Option C

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72

Organic evolution is also called

A) chemical evolution B) stellar evolution C) biological evolution D) All of the above

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Answer & Solution

Answer: Option C

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73

The difference between Homo sapiens and the Homo erectus was

A) Homo sapiens originated in Africa, while Homo erectus originated in Asia B) Homo erectus were much smaller in size than Homo sapiens C) Homo erectus stayed in Africa, while Homo sapiens did not D) The size of the brain of Homo erectus was smaller than that of Homo sapiens

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Answer & Solution

Answer: Option D

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74

The wing of a bat and the wing of a bird are the examples of . . . . . . . . limbs.

A) Homogenous B) Heterogeneous C) Analogous D) Homologous

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Answer & Solution

Answer: Option C

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75

Which of the following basic processes provide the genetic variability without which change cannot take place?

A) Natural selection, gene mutation and reproductive isolation B) Gene mutation, reproductive isolation and genetic recombination C) Genetic recombination, natural selection and gene mutation D) Gene mutation, chromosomal aberrations and genetic recombination

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Answer: Option D

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76

Which phenomena leads to the variation in

A) DNA Mutation B) Linkage C) Both A and B D) Mitosis

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Answer & Solution

Answer: Option A

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77

The lactose (lac) operon of the bacterium E. coli has which of the following structural genes?

A) z, y, a and b B) z, y, a, b and c C) z, y and b D) z, y and a

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Answer & Solution

Answer: Option D

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78

Match List-I (Growth Regulators) with List-II (Functions) and select the correct answer:

List-I	List-II
a. Auxin	1. Causes uniform ripening in many fruits
b. Ethylene	2. Induces formation of roots on stem cuttings of many ornamental, horticultural and forest trees
c. Gibberellin	3. Used to prolong storage of potato and many fruits
d. Maleic hydrazide	4. Used to delay ripening in lemons

A) a-1, b-2, c-3, d-4 B) a-2, b-1, c-4, d-3 C) a-3, b-4, c-1, d-2 D) a-4, b-3, c-2, d-1

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Answer & Solution

Answer: Option B

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79

Positive control of gene expression can be exercised directly by

A) A regulator DNA association B) Catabolite repression C) Free repressor, inducer reassociation D) Either A or B

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Answer & Solution

Answer: Option D

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80

2X-chromosomes in a diploid organism produce a

A) Male B) Female C) Lethal gene D) Both A and B

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Answer & Solution

Answer: Option B

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