Q. No.
Genetic drift is most powerful in
1. changing environments
2. small populations
3. large populations
4. stable environments
1. changing environments
2. small populations
3. large populations
4. stable environments
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The concept of genetic bottlenecks includes which of the following?
| 1. | a loss of genetic diversity in descendent populations |
| 2. | extensive gene flow |
| 3. | sharing of genetic material between two populations |
| 4. | increased ability to resist new diseases |
Which statement most accurately reflects what population geneticists refer to as "fitness"?
| 1. | Fitness is the measure of an organism's adaptability to various habitats. |
| 2. | Fitness reflects the number of mates each individual in the population selects. |
| 3. | Fitness refers to the relative health of each individual in the population. |
| 4. | Fitness is a measure of the contribution of a genotype to the gene pool of the next generation. |
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Organisms that are least likely to experience extinction over the long term are most likely to be found in:
| 1. | areas inhabited by humans | 2. | very stable habitats |
| 3. | desert | 4. | savanna |
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Which one of the following would cause the Hardy-Weinberg principle to be inaccurate?
| 1. | The size of the population is very large. |
| 2. | Individuals mate with one another at random. |
| 3. | Natural selection is present. |
| 4. | There is no source of new copies of alleles from outside the population. |
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Which one of the following populations would most quickly lead to two groups with few shared traits?
| 1. | a population with disruptive selection |
| 2. | a population with directional selection |
| 3. | a population with stabilizing selection |
| 4. | a population with no selection |
Which of the following is used as an atmospheric pollution indicator?
| 1. | Lepidoptera | 2. | Lichens |
| 3. | Lycopersicon | 4. | Lycopodium |
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The theory of spontaneous generation stated that:
| 1. | life arose from living forms only |
| 2. | life can arise from both living and non-living |
| 3. | life can arise from non-living things only |
| 4. | life arises spontaneously, neither from the living nor from the non-living |
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Animal husbandry and plant breeding programmes are the examples of:
1. reverse evolution
2. artificial selection
3. mutation
4. natural selection
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Palaeontological evidence for evolution refers to the:
| 1. | development of the embryo | 2. | homologous organs |
| 3. | fossils | 4. | analogous organs |
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