The similarity of bone structure in the forelimbs of many vertebrates is an example of
1. Homology
2. Analogy
3. Convergent evolution
4. Adaptive radiation

Subtopic:  Concept of Organic Evolution: Evidence: 1 | Concept of Organic Evolution: Evidence |
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Among the following sets of examples for divergent evolution, select the incorrect option:

1. Forelimbs of man, bat and cheetah
2. Heart of bat, man and cheetah
3. Brain of bat, man and cheetah
4. Eye of octopus, bat and man

Subtopic:  Concept of Organic Evolution: Evidence: 2 | Concept of Organic Evolution: Evidence |
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According to Hugo de Vries, the mechanism of evolution is:-
1. Multiple step mutations
2. Saltation
3. Phenotypic variations
4. Minor mutations
Subtopic:  Hugo De Vries Theory of Evolution |
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Artificial selection to obtain cows yielding high milk output represents

(1) Stabilising selection as it stabilizes this character in the population

(2) Directional as it pushes the mean of the character in one direction

(3) Disruptive as it spills the population into two, one yielding higher output and the other lower output

(4) Stabilizing followed by disruptive as it stabilizes the population of producing higher yielding cows

Subtopic:  Additional Theories of Darwin |
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Artificial selection to obtain cows yielding higher milk output represents:

1. Directional, as it pushes the mean of the character in one direction

2. Disruptive, as it splits the population into two, one yielding output and the other lower output

3. Stabilizing followed by disruptive, as it stabilizes the population to produce higher yielding cows

4. Stabilizing selection, as it stabilizes this character in the population

Subtopic:  Types of Natural Selection |
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In Hardy- Weinberg equation, the frequency of heterozygous individual is represented by

(1) P2

(2) 2pq

(3) pq

(4) q2

Subtopic:  Hardy Weinberg Law: 1 | Hardy Weinberg Law |
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Which of the following is the correct sequence of events in the origin of life?

I.    Formation of protobionts,

II.   Synthesis of organic monomers.

III.  Synthesis of organic polymers.

IV.   Formation of DNA-based genetic systems.

 

(1) I,II,III,IV

(2) I,III,II,IV

(3) II,III,I,IV

(4) II,III,IV,I 

Subtopic:  Origin of Life: Chemical Evolution: 1 | Origin of Life |
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Analogous structures are a result of
(1) Convergent evolution 

(2) shared ancestry

(3) stabilising selection 

(4) divergent evolution

Subtopic:  Concept of Organic Evolution: Evidence: 1 | Concept of Organic Evolution: Evidence |
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Which of the following structures is homologous to the wing of a bird?

(1) Wing of a moth

(2) Hind limb of rabbit

(3) Flipper of whale

(4) Dorsal fin of a shark

Subtopic:  Concept of Organic Evolution: Evidence: 1 | Concept of Organic Evolution: Evidence |
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Following are the two statements regarding the origin of life

I.  The earliest organisms that appeared on the earth were non-green presumably

anaerobes.

II. The first autotrophic organisms were the chemoautotrophs that never released

oxygen.

Of the above statements which one of the following options is correct?

1. II is correct but I is false

2. Both I and II are correct

3. Both I and II are false

4. I is correct but II is false 

Subtopic:  Origin of Life: Chemical Evolution: 1 | Origin of Life |
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