The frequency of the recessive allele for a trait is recorded to be 0.25 [Assume only two alleles for the gen and complete dominance]. What would the expected frequency of the heterozygotes in this population?
1. 0.0625
2. 0.5625
3. 0.375
4. 0.1875

Subtopic:  Hugo De Vries Theory of Evolution |
 69%
Please attempt this question first.
Hints

Hugo de Vries believed that:
1. discontinuous variations due to mutations are important for evolution
2. continuous variations due to recombination are important for evolution
3. evolution is a function of time
4. evolution is a deterministic process
Subtopic:  Hugo De Vries Theory of Evolution |
 79%
From NCERT
Please attempt this question first.
Hints
Please attempt this question first.

It is possible that Darwin was influenced by the essay on populations by:
1. Carl Correns 2. Charles Lyell
3. Thomas Malthus 4. A. R. Wallace
Subtopic:  Modern Theory of Evolution |
 84%
From NCERT
Please attempt this question first.
Hints
Please attempt this question first.

advertisementadvertisement

Consider the given two facts:
I: Theoretically, population size will grow exponentially if everybody reproduced maximally
II: Population sizes in reality are limited
What inference(s) can be definitely drawn from the given facts?
A. there had been competition for resources
B. the best adapted survive the competition
1. Only A
2. Only B
3. Both A and B
4. Neither A nor B
Subtopic:  Population Genetics |
Please attempt this question first.
Hints
Please attempt this question first.

 “Giraffes, in an attempt to forage leaves on tall trees, had to adapt by elongation of their necks and they passed on this acquired character of elongated neck to succeeding generations” – this explanation of long necks can best be ascribed to:
1. Charles Darwin 2. Lamarck
3. Hugo de Vries 4. Louis Pasteur
Subtopic:  Theory of Evolution & Lamarckism |
 94%
From NCERT
Please attempt this question first.
Hints
Please attempt this question first.

Consider the given two statements:
Assertion: Natural selection can be regarded as ‘differential reproduction’.
Reason: Nature selects for fitness.
 
1. Both Assertion and Reason are true and Reason correctly explains the Assertion.
2. Both Assertion and Reason are true but Reason does not correctly explain the Assertion.
3. Assertion is true but Reason is false.
4. Assertion is false but Reason is true.
Subtopic:  Natural Selection |
From NCERT
Please attempt this question first.
Hints
Please attempt this question first.

advertisementadvertisement

Within the Australian continent marsupials have undergone:
1. disruptive selection
2. adaptive radiation
3. extinction
4. rapid speciation due to sudden large scale mutations
Subtopic:  Genetic Basis of Adaptation |
 94%
From NCERT
Please attempt this question first.
Hints
Please attempt this question first.

Evolution by anthropogenic action:
1. is a determinist process.
2. only leads to evolution of species that are useful to humans.
3. usually is faster than the natural process.
4. is not at all related to mutations
Subtopic:  Palentological Evidences of Evolution |
 61%
From NCERT
Please attempt this question first.
Hints
Please attempt this question first.

Consider the given two statements
Assertion (A): Dark melanic peppered moth survive better in polluted environments.
Reason (R): In polluted areas, dark melanic moths are able to camouflage themselves.
 
1. Both (A) and (R) are True and (R) correctly explains (A).
2. Both (A) and (R) are True but (R) does not correctly explain
(A).
3. (A) is True but (R) is False.
4. (A) is False but (R) is True.
Subtopic:  Palentological Evidences of Evolution |
 94%
From NCERT
Please attempt this question first.
Hints
Please attempt this question first.

advertisementadvertisement

Consider the given two statements:
Assertion(A): Homology implies divergent evolution.
Reason(R): Homologous organs are organs which do similar jobs in two taxa that were not present in their most recent common ancestor but rather evolved separately.
 
1. Both (A) and (R) are True and (R) correctly explains (A).
2. Both (A) and (R) are True but (R) does not correctly explain (A).
3. (A) is True but (R) is False.
4. (A) is False but (R) is True.
Subtopic:  Palentological Evidences of Evolution |
 79%
From NCERT
Please attempt this question first.
Hints
Please attempt this question first.