Q. No.The phenomenon of the evolution of different species in a given geographical area starting from a point and spreading to other habitats is called:
1.
Saltation
2.
Co-evolution
3.
Natural selection
4.
Adaptive radiation
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In a population in genetic equilibrium, the frequency of the recessive allele is found to be 0.2. What is the frequency of heterozygotes in this population?
| 1. | 0.8 | 2. | 0.16 |
| 3. | 0.32 | 4. | 0.64 |
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When a new population is established by a very small number of individuals from a larger population, sometimes becoming a different species, the process is called as:
| 1. | Founder effect | 2. | Genetic bottleneck |
| 3. | Adaptive radiation | 4. | Convergent evolution |
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The process of evolution of different species in a given geographical area starting from a point and literally radiating to other areas of geography [habitats] is known as:
| 1. | Convergent evolution | 2. | Divergent evolution |
| 3. | Adaptive radiation | 4. | Artificial selection |
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All the following are examples of evolution by anthropogenic action except:
| 1. | Industrial melanism seen in peppered moth |
| 2. | Pesticide resistance in pests |
| 3. | Emergence of antibiotic resistant bacteria |
| 4. | Streamlined body in dolphins |
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Similar biological structures or sequences in different taxa are homologous if they:
| 1. | always perform the same function |
| 2. | result from convergent evolution |
| 3. | do not serve any known function |
| 4. | are derived from a common ancestor |
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The natural selection operating as shown in the given figure is called as:
| 1. | Disruptive |  |
| 2. | Directional | |
| 3. | Stabilizing | |
| 4. | Retrogressive |
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| Statement I: | They evolved in a similar environment, rather than inherited from a recent common ancestor. |
| Statement II: | They have a common descent and have evolved from a shared ancestor. |
| 1. | Statement I is correct; Statement II is incorrect |
| 2. | Statement I is correct; Statement II is correct |
| 3. | Statement I is incorrect; Statement II is correct |
| 4. | Statement I is incorrect; Statement II is incorrect |
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| I: | It is the process of evolution of different species in a given geographical area starting from a point and literally radiating to other areas of geography (habitats). |
| II: | When more than one adaptive radiation appeared to have occurred in an isolated geographical area (representing different habitats), one can call this divergent evolution. |
| 1. | Only I | 2. | Only II |
| 3. | Both I and II | 4. | Neither I nor II |
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