Gentics and Evoloution MCQ question and answer with solution

81

Crown-gall tumours of sunflower are caused by

A) Agrobacterium B) Rhizopus C) Asperigillus D) Saccharomyces

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Answer & Solution

Answer: Option A

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82

Oparin and Haldane's theory is also called

A) Chemical theory of origin of life B) Modern theory of origin of life C) Naturalistic theory D) All of the above

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Answer: Option D

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83

'Linkage' was discovered by

A) Blakslee B) Morgan C) Muller D) Bateson

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Answer: Option B

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84

A chromosome break occurs, and is followed by duplication of the chromosome during

A) Prophase B) Metaphase C) Anaphase D) Telophase

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Answer: Option A

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85

Jumping genes/transposons/movable genetic elements discovered by Barbara McClintock in

A) maize B) wheat C) barley D) rice

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Answer: Option A

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86

Match List-I with List-II and select the correct answer:

List-I	List-II
a. Cross between F₁ and recessive parent	1. Monohybrid cross
b. Cross between F₁ and either parents	2. Dihybrid cross
c. Two traits consider	3. Back cross
d. Only one trait consider	4. Test cross

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

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Answer: Option A

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87

Consider the following statements regarding the historical aspects of DNA and choose the correct answer:
1. Meischer isolated nucleic acids, which he called nuclein
2. Altmann used the term nucleic acid to replace nuclein
3. Fischer identified pyrimidines and purines
4. Griffiths discovered bacterial transformation by DNA

A) Only 1, 2 and 4 are true B) Only 2, 3 and 4 are true C) 1, 2, 3 and 4 are true D) Only 1 and 4 are true

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Answer: Option C

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88

Genes are made up of

A) nucleic acids B) proteins C) carbohydrates D) lipids

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Answer & Solution

Answer: Option A

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89

In paracentric inversions

A) The centromere is included with the inverted segment B) The centromere is outside the inverted segment C) The inverted segment bears two or more centromeres D) There is possibility of duplication and deficiency

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Answer & Solution

Answer: Option B

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90

The important postulates in the theory of special creation include:

A) All the different kinds of life (microorganisms, fungi, algae, animals and plants) were created at different times having certain relationship with each other B) The different kinds of life were created in different forms in which they exist at present, having undergone changes since their creation C) The bodies and organs of different kinds of life have been specially designed to fully meet the needs of the environment in which they have been created D) All of the above

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Answer: Option C

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