In the apparatus of Urey and Miller experiment, the gases [G] contained in the flask are :

 

1. Methane, Carbon dioxide, Ammonia and Water vapour
2. Methane, Hydrogen cyanide, Ammonia and Water vapour
3. Methane, Ammonia, Hydrogen and Water vapour
4. Carbon dioxide, Oxygen, hydrogen and ammonia 

Subtopic:  Urey & Miller Experiment |
 66%
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Lamarck's theory of evolution is also called

1. Theory of special creation

2. Inheritance of acquired characters

3. Survival of the fittest

4. None of these

Subtopic:  Theory of Evolution & Lamarckism |
 87%
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Industrial melanism is an example of

(1) Neo Darwinism

(2) Natural selection

(3) Mutation

(4) Neo Lamarckism

Subtopic:  Types of Natural Selection |
 88%
From NCERT
NEET - 2015
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Which is the most common mechanism of genetic variation in the population of a sexually reproducing organism?

(1) Transduction

(2) Chromosomal aberrations

(3) Genetic drift

(4) Recombination

Subtopic:  Sources of Variation: 1 | Sources of Variation: 2 | Sources of Variation |
 66%
NEET - 2015
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What is common to whale, seal and shark?

(1) Seasonal migration

(2) Thick subcutaneous fat

(3) Convergent evolution

(4) Homeothermy

Subtopic:  Definition & Types of Evolution |
 55%
NEET - 2007
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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 |
 57%
NEET - 2017
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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 |
 88%
From NCERT
NEET - 2016
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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 |
NEET - 2016
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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 |
 90%
From NCERT
NEET - 2016
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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 |
 55%
NEET - 2016
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