The process by which organisms with different evolutionary history evolve similar phenotypic adaptations in response to a common environmental challenge is called:
1. Convergent evolution
2. Non-random evolution
3. Adaptive radiation
4. Natural selection

Subtopic:  Concept of Organic Evolution: Evidence: 2 | Concept of Organic Evolution: Evidence |
 67%
From NCERT
AIPMT - 2013
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The tendency of the population to remain in genetic equilibrium may be disturbed by:
1. lack of migration
2. lack of mutations
3. lack of random mating
4. random mating
Subtopic:  Hardy Weinberg Law: 1 | Hardy Weinberg Law: 2 | Hardy Weinberg Law |
 61%
AIPMT - 2013
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In a population of 1000 individuals, 360 belong to genotype AA, 480 to Aa and the remaining 160 to aa. Based on this data, the frequency of allele A in the population is:
1. 0.4
2. 0.5
3. 0.6
4. 0.7

Subtopic:  Hardy Weinberg Law: 1 | Hardy Weinberg Law |
 74%
From NCERT
AIPMT - 2014
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Forelimbs of cat, lizard used in walking; forelimbs of whale used in swimming and forelimbs of bats used in flying are an example of:

1. Analogous organs

2. Adaptive radiation

3. Homologous organs

4. Convergent evolution

Subtopic:  Concept of Organic Evolution: Evidence: 1 | Concept of Organic Evolution: Evidence |
 81%
AIPMT - 2014
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Which one of the following are analogous structures?

1. Wing of Bat and Wings of Pigeon

2. Gills of Prawn and Lungs of Man

3. Thorns of Bougainvillea and Tendrils of Cucurbita

4. Flippers of Dolphin and Legs of Horse.

Subtopic:  Concept of Organic Evolution: Evidence |
AIPMT - 2014
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Variation in gene frequencies within populations can occur by chance rather than by natural selection. 
This is referred to as:

1. Genetic drift

2. Random mating

3. Genetic load

4. Genetic flow

Subtopic:  Hardy Weinberg Law |
 85%
From NCERT
AIPMT - 2013
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Evolution of different species in a given area starting from a point and spreading to other geographical areas is known as:

1. Adaptive radiation

2. Natural selection

3. Migration

4. Divergent evolution

Subtopic:  Concept of Organic Evolution: Evidence: 2 | Concept of Organic Evolution: Evidence |
 83%
From NCERT
AIPMT - 2012
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Which one of the following options gives one correct example of convergent evolution and divergent evolution?

Convergent Evolution Divergent Evolution
1. Eyes of octopus and mammals Bones of forelimbs of vertebrates
2. Thorns of Bougainvillea and tendrils Cucurbita Wings of butterflies and birds
3. Bones of forelimbs of vertebrates Wings of butterfly and birds
4. Thorns of Bougainvillea and tendrils of Cucurbita Eyes of Octopus and mammals
Subtopic:  Concept of Organic Evolution: Evidence: 2 | Concept of Organic Evolution: Evidence |
 85%
From NCERT
AIPMT - 2012
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The extinct human who lived 100000 to 40000 years ago, in Europe, Asia, and parts of Africa, with short stature, heavy eyebrows, retreating for heads, large jaws with heavy teeth, stocky bodies, a lumbering gait, and stooped posture was:

1. Homo habilis

2. Neanderthal human

3. Cro-Magnon humans

4. Ramapithecus

Subtopic:  Evolution Prior to Ape Man: 1 | Evolution Prior to Ape Man: 2 | Evolution Prior to Ape Man |
 83%
From NCERT
AIPMT - 2012
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What was the most significant trend in the evolution of modem man (Homo sapiens) from his ancestors?

1.  Shortening of jaws

2.  Binocular vision

3.  Increasing brain capacity

4.  Upright posture

Subtopic:  Evolution of Homo Sapiens |
 76%
From NCERT
AIPMT - 2011
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