Principles of Inheritance and Variation MCQ Questions & Answers in Botany

61. In his classic experiments on Pea plants, Mendel did not use

A Pod length

B Seed shape

C Flower position

D Seed colour

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62. Fossils are

A Animals living in burrows

B Remnants of extinct animals and plants

C Floating organisms

D Fast runners

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63. Cosmozoic theory was proposed by

A Helmholtz

B Richter

C Pasteur

D Arrhenium

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64. What is the ratio of a progeny of cross between Fjheterozygous and recessive

A 3:1

B 1:2:1

C 1:1

D 2:1

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65. The scientific name of Homo erectus-erectus has been given to

A Cromagnon man

B Neanderthal man

C Java ape man

D Peking man

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66. In case of incomplete dominance, F2 generationhas

A Genotypic ratio equal to phenotypic ratio

B Genotypic ratio is 3:1

C Phenotypic ratio is 3:1

D None of the above

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67. DNA ligase is an enzyme that catalyses the

A Splitting of DNA threads into small bits

B Joining of the fragments of DNA

C Denaturation of DNA

D Synthesis of DNA

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68. If a cross is made between A A and aa, the nature of f! progeny will be

A Genotypically AA, phenotypically a

B Genotypically Aa, phenotypically a

C Genotypically Aa, phenotypically A

D Genotypically aa, phenotypically A

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69. A normal green male maize is crossed with albino female. The progeny is albino because

A trait for albinism is dominant

B the albinos have biochemical to destroy plastids derived form green male

C plastids are inherited from female parent

D green plastids of male must have mutated

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70. When the mutation at one locus is neutralized by the mutation at another locus of same or different chromosome it is termed

A Gibberish mutation

B Backward mutation

C Crossing over

D Neutral mutation

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61. In his classic experiments on Pea plants, Mendel did not use

62. Fossils are

63. Cosmozoic theory was proposed by

64. What is the ratio of a progeny of cross between Fjheterozygous and recessive

65. The scientific name of Homo erectus-erectus has been given to

66. In case of incomplete dominance, F2 generationhas

67. DNA ligase is an enzyme that catalyses the

68. If a cross is made between A A and aa, the nature of f! progeny will be

69. A normal green male maize is crossed with albino female. The progeny is albino because

70. When the mutation at one locus is neutralized by the mutation at another locus of same or different chromosome it is termed

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