Study the given two statements:
Statement I:
The eye of the octopus and the eye of mammals are homologous.
Statement II:
Sweet potato and potato are an example of homology.
1.
Statement I is incorrect; Statement II is correct
2.
Statement I is correct; Statement II is correct
3.
Statement I is correct; Statement II is incorrect
4.
Statement I is incorrect; Statement II is incorrect
Subtopic: Concept of Organic Evolution: Evidence |
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The frequencies of dominant and recessive alleles of a gene in a population are 0.7 and 0.3 respectively. The expected frequency for heterozygotes in the population is likely to be:
| 1. | 42% | 2. | 49% |
| 3. | 21% | 4. | 9% |
Subtopic: Hardy Weinberg Law |
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Identify the correct statement:
| 1. | Evolution by natural selection works best on a population having no variation. |
| 2. | Mutation is a relatively unimportant source of variation and is not the foundation for evolution. |
| 3. | The effects of genetic drift are most apparent in small populations. |
| 4. | Inbreeding increases the proportion of heterozygous individuals in a population. |
Subtopic: Difference Between Drift & Selection | Hardy Weinberg Law |
80%
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Embryological support for evolution was proposed by:
1. Ernst Mayr
2. Ernst Haeckel
3. Hugo de Vries
4. Kary Mullis
Subtopic: Embryological Evidence of Evolution |
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A process in which heritable variations enabling better survival are enabled to reproduce and leave greater number of progeny is called:
| 1. | Evolution | 2. | Saltation |
| 3. | Speciation | 4. | Natural selection |
Subtopic: Hardy Weinberg Law |
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In 1953, S.L. Miller created conditions similar to those suggested by Oparin and Haldane in a laboratory where he created electric discharge in a closed flask containing:
| 1. | CH4, H2, NH3 and water vapour at 800°C |
| 2. | CH4, H2, HCN and hydrogen sulphide at 400°C |
| 3. | CO2, H2, NH3 and water vapour at 800°C |
| 4. | CO2, H2, HCN and hydrogen sulphide at 400°C |
Subtopic: Urey & Miller Experiment |
94%
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Darwin’s finches represent one of the best examples of:
1. Saltation
2. Sympatric speciation
3. Adaptive radiation
4. Convergent evolution
1. Saltation
2. Sympatric speciation
3. Adaptive radiation
4. Convergent evolution
Subtopic: Additional Theories of Darwin | Concept of Organic Evolution: Evidence |
94%
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Populations at genetic equilibrium [Hardy Weinberg equilibrium]:
| 1. | are very small |
| 2. | are not experiencing any natural selection |
| 3. | have individuals frequently going out and coming in |
| 4. | are mating randomly |
Subtopic: Hardy Weinberg Law |
61%
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Adaptations for evolutionary significance:
| 1. | develop throughout the lifetime of organisms and are then passed on to their offspring |
| 2. | develop after a population encounters a change in environment |
| 3. | are inherited characteristics |
| 4. | decrease the chances of the organism surviving until maturity |
Subtopic: Concept of Organic Evolution: Evidence |
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Working independently, who reached conclusions similar to those reached by Darwin on evolution of life forms?
| 1. | T R Malthus | 2. | Hugo de Vries |
| 3. | Alfred Russell Wallace | 4. | Jean Baptist Lamarck |
Subtopic: Theory of Evolution & Lamarckism | Darwin's Theory |
71%
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