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Q. No.In a population of 500 people, the frequency of recessive allele is 0.2 [only two alleles are present for the gene with one completely dominant]. What is the number of heterozygous persons in this population?
1.
200
2.
320
3.
160
4.
240
Subtopic: Hardy Weinberg Law |
68%
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What was the main point of difference between Darwin and Hugo de Vries regarding evolution?
| 1. | Darwin did not believe in the inheritance of acquired traits while Hugo de Vries did. |
| 2. | Evolution for Darwin was gradual while Hugo de Vries believed mutation caused speciation. |
| 3. | Evolution for Darwin was a stochastic process and for Hugo de Vries was a determinist process. |
| 4. | Fitness for Darwin was reproductive fitness and for Hugo de Vries was physical fitness. |
Subtopic: Darwin's Theory | Hugo De Vries Theory of Evolution | Modern Theory of Evolution | Concept of Organic Evolution: Evidence |
85%
From NCERT
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Which of the following animals can trace their ancestry from therapsids?
1. Mammals only
2. Mammals and Birds
3. Dinosaurs, Crocodiles and Birds
4. Turtles, Lizards, Snakes and Tuataras
1. Mammals only
2. Mammals and Birds
3. Dinosaurs, Crocodiles and Birds
4. Turtles, Lizards, Snakes and Tuataras
Subtopic: Evolution Prior to Ape Man: 1 |
58%
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Pouched mammals of Australia survived because:
| 1. | they all are top predators in a food chain |
| 2. | they are all herbivores and hence get to feed on large amounts of available primary production |
| 3. | of lack of competition from any other mammals |
| 4. | the Australian environment is not conducive for the survival of true placental mammals |
Subtopic: Natural Selection |
78%
From NCERT
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Match each item in COLUMN I with one in Column II and select the best match from the codes given:
Choose the correct answer from the options given below:
| COLUMN I | COLUMN II | ||
| (a) | Adaptive radiation | (i) | Fast emergence of resistance in bacteria against antibiotics |
| (b) | Convergent evolution | (ii) | Bones of forelimbs in Man and Whale |
| (c) | Divergent evolution | (iii) | Wings of Butterfly and Bird |
| (d) | Evolution by anthropogenic action | (iv) | Dispersion and diversification of Australian marsupials |
Choose the correct answer from the options given below:
| (a) | (b) | (c) | (d) | |
| 1. | (ii) | (i) | (iv) | (iii) |
| 2. | (i) | (iv) | (iii) | (ii) |
| 3. | (iv) | (iii) | (ii) | (i) |
| 4. | (iii) | (ii) | (i) | (iv) |
Subtopic: Natural Selection | Concept of Organic Evolution: Evidence |
93%
From NCERT
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Assertion: Natural selection is differential reproduction
Reason: The unit of natural selection is individual
1. Both assertion and reason are true and the reason is the correct explanation of the assertion
2. Both assertion and reason are true but the reason is not the correct explanation of the assertion
3. Assertion is true but reason is false
4. Both assertion and reason are false
Reason: The unit of natural selection is individual
1. Both assertion and reason are true and the reason is the correct explanation of the assertion
2. Both assertion and reason are true but the reason is not the correct explanation of the assertion
3. Assertion is true but reason is false
4. Both assertion and reason are false
Subtopic: Natural Selection |
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With the passing of stringent laws and pollution control measures in Britain, there has been a decline in the frequency of melanic form of the Peppered moth. The most likely cause for this observation will be:
1. industrial pollutants turned the moths black
2. the selection pressure on the melanic and the non-melanic forms has reversed
3. genetic drift
4. assortative mating
1. industrial pollutants turned the moths black
2. the selection pressure on the melanic and the non-melanic forms has reversed
3. genetic drift
4. assortative mating
Subtopic: Concept of Organic Evolution: Evidence |
72%
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The statement “Embryos pass through successive stages that represent the adult forms of less complex organisms in the course of development” can be equated with:
| 1. | Recapitulation theory | 2. | Baer’s law |
| 3. | Descent with modification | 4. | Punctuated equilibrium |
Subtopic: Embryological Evidence of Evolution |
60%
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Consider the two statements:
I. Birds and bats have homologous limbs.
II. They are both ultimately derived from terrestrial tetrapods.
1. Both I and II are correct and II explains I
2. Both I and II are correct but II does not explain I
3. I is incorrect but II is correct
4. I is correct but II is incorrect
I. Birds and bats have homologous limbs.
II. They are both ultimately derived from terrestrial tetrapods.
1. Both I and II are correct and II explains I
2. Both I and II are correct but II does not explain I
3. I is incorrect but II is correct
4. I is correct but II is incorrect
Subtopic: Concept of Organic Evolution: Evidence |
52%
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Amino acids produced and identified in the "classic" 1952 experiment by Miller include all of the following except:
| 1. | Glycine | 2. | Alanine |
| 3. | Aspartic acid | 4. | Tryptophan |
Subtopic: Urey & Miller Experiment |
70%
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