Adaptive radiation refers to

1. adaptations due to geographical isolation 

2. evolution of different species from a common ancestor

3. migration of members of a species to different geographical areas

4. power of adaptation in an individual to a variety of environments

Subtopic:  Concept of Organic Evolution: Evidence: 2 | Concept of Organic Evolution: Evidence |
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Random genetic drift in a population probably results from   

1. large population size

2. highly genetically variable individuals

3. interbreeding within small isolated population 

4. constant low mutation rate

Subtopic:  Sources of Variation: 2 | Sources of Variation |
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Which one of the following features is closely related with the evolution of humans?

1. Loss of tail                         

2. Shortening of jaws

3. Binocular vision                   

4. Flat nails

Subtopic:  Introduction to Human Evolution |
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Homo sapiens evolved during

1. Pleistocene 

2. Oligocene

3. Pliocene 

4. Miocene

Subtopic:  Evolution of Homo Sapiens |
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Identify the correct sequence in which the following substances have appeared during the course of evolution of life on earth.

1. glucose, amino acids, nucleic acids, proteins

2. ammonia, amino acids, proteins, nucleic acids

3. water, amino acids, nucleic acids, enzymes

4. amino acids, ammonia, phosphates, nucleic acids

Subtopic:  Origin of Life: Chemical Evolution: 1 | Origin of Life |
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In which condition the gene ratio remains constant for any species?

1. Sexual selection

2. Random mating

3. Mutation

4. Gene flow

Subtopic:  Hardy Weinberg Law: 1 | Hardy Weinberg Law |
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Darwin's theory of pangenesis shows similarity with theory of inheritance of acquired characters then what will be correct according to it?

1. Useful organs become strong and developed while useless organs become extinct. These organs help in struggle for survival

2. Size of organs increase with ageing

3. Development of organs is due to will power

4. There should be some physical basis of inheritance

Subtopic:  Drawbacks of Darwin's Theory |
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Presence of gills in the tadpole of frog indicates that

1. fishes were amphibian in the past

2. fishes evolved from frog-like ancestors

3. frogs will have gills in future

4. frogs evolved from gilled ancestors

Subtopic:  Embryological Evidence of Evolution |
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'Golden age of dinosaurs'/Age of reptiles was

1. Mesozoic                                 

2. Coenozoic  

3. Palaeozoic                                 

4. Psychozoic  

Subtopic:  Palentological Evidences of Evolution |
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Reason of diversity in living being is

1. mutation 

2. gradual change

3. long term evolutionary change

4. short term evolutionary change

Subtopic:  Theory of Evolution & Lamarckism | Darwin's Theory |
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