Oparin and Haldane proposed that at the time of the origin of life, the condition of the earth included all the following except:
1. A highly oxidizing atmosphere
2. High temperature
3. Volcanic storms
4. Presence of methane and ammonia in the atmosphere

Subtopic:  Examples of Chemical Evolution |
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The frequency of the recessive allele in a population at genetic equilibrium is 0.3. What is the frequency of heterozygotes in this population?
1. 0.9 2. 0.7
3. 0.42 4. 0.49
Subtopic:  Hardy Weinberg Law |
 74%
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What type of natural selection is shown in the given figure?

1. Stabilizing
2. Directional
3. Disruptive
4. Regressive
Subtopic:  Natural Selection |
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Identify the correctly matched pair:
I. Homo habilis Brain capacity 650-800 cc; probably did not eat meat
II. Homo erectus Brain capacity about 900 cc; probably ate meat
III. Neanderthal man Brain capacity 1400 cc; buried their dead
 
1. Only I and II
2. Only I and III
3. Only II and III
4. I, II, and III
Subtopic:  Introduction to Human Evolution | Evolution of Homo Sapiens |
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Natural selection where more individuals acquire specific character value other than the mean character value, leads to :
1. Random change 
2. Stabilising change 
3. Directional change 
4. Disruptive change 
Subtopic:  Natural Selection |
 72%
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NEET - 2022
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Which of the following statements is not true?
1. Flippers of penguins and dolphins are a pair of homologous organs.
2. Analogous structures are a result of convergent evolution.
3. Sweet potato and potato is an example of analogy.
4. Homology indicates common ancestry.
Subtopic:  Concept of Organic Evolution: Evidence: 1 |
 83%
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Genetic Drift occurs due to : 
1. Natural selection 
2. Sudden population migration 
3. Continuous gene migration 
4. Mutation 

Subtopic:  Hardy Weinberg Law: 1 |
 62%
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NEET - 2022
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Select the correct match regarding adaptive radiation of Australian marsupials corresponding to placental mammals 
1. Numbat-Flying Squirrel 
2. Tasmanian Wolf - Bobcat 
3. Marsupial mouse- Mole 
4. Spotted Cuscus - Lemur

Subtopic:  Concept of Organic Evolution: Evidence |
 69%
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Speciation occurs most frequently is populations that are
1. Sympatric 
2. Undergoing disruptive selection
3. Allopatric
4. Not geographically separated
Subtopic:  Concept of Speciation |
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Assertion(A): Analogous structures are a result of convergent evolution
Reason(R): More than one adaptive radiation appeared to have occurred in an isolated geographical area, is the convergent evolution

In the following questions a statement of assertion (A) is followed by a statement of reason (R).
1. Both (A) & (R) are true and (R) is the correct explanation of (A)
2. Both (A) & (R) are true but (R) is not the correct explanation of (A)
3. (A) is true  but (R) is false
4. Both (A) and (R) are false statements


 
Subtopic:  Sources of Variation |
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