Q. No.According to the Hardy-Weinberg equilibrium, which condition is not required for a population to remain at genetic equilibrium?
| 1. | Random mating must occur. |
| 2. | The population must be infinitely large. |
| 3. | Migration must occur frequently with other populations. |
| 4. | There should be no selection for any of the genotypes. |
Subtopic: Hardy Weinberg Law |
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In a population of certain plants in a given area, the frequency of the allele for red flowers was 0.8. [Red color is the dominant trait and white color is the recessive trait and there are only two alleles for flower color]. What will be the frequency of the white allele in this population?
1. 0.8
2. 0.32
3. 0.16
4. 0.2
1. 0.8
2. 0.32
3. 0.16
4. 0.2
Subtopic: Hardy Weinberg Law |
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In the Hardy-Weinberg equation, what does the term ‘2pq’ represent?
1. the frequency of dominant homozygotes
2. the frequency of recessive homozygotes
3. the frequency of dominant allele
4. the frequency of heterozygotes
1. the frequency of dominant homozygotes
2. the frequency of recessive homozygotes
3. the frequency of dominant allele
4. the frequency of heterozygotes
Subtopic: Hardy Weinberg Law |
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What evolutionary agent describes the movement of new genes into a population as a result of migration or hybridization?
1. founder principle
2. gene flow
3. bottleneck effect
4. adaptation
1. founder principle
2. gene flow
3. bottleneck effect
4. adaptation
Subtopic: Hardy Weinberg Law |
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The loss of genetic variation that occurs when a new population is established by a very small number of individuals from a larger population is called as:
| 1. | Gene flow | 2. | Bottleneck effect |
| 3. | Founder effect | 4. | Genetic death |
Subtopic: Hardy Weinberg Law |
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If the frequency of the dominant allele (A) in a population is 0.5, what is the frequency of the heterozygotes [Aa] if the population is in genetic equilibrium?
| 1. | 0.5 | 2. | 0.25 |
| 3. | 0.75 | 4. | 0.125 |
Subtopic: Hardy Weinberg Law |
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What does the 'founder effect' describe?
| 1. | The impact of new mutations in a small population. |
| 2. | The effect of a dominant individual founding a new population. |
| 3. | The loss of genetic variation when a new colony is formed by a very small number of individuals from a larger population. |
| 4. | The influence of a new environment on a small population. |
Subtopic: Hardy Weinberg Law |
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The frequency of recessive allele in a population of 500 at genetic equilibrium was found to be 0.4. What would be the number of heterozygotes in this population?
1. 40
2. 240
3. 200
4. 320
Subtopic: Hardy Weinberg Law |
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For the MN-blood group system, the frequencies of M and N alleles are 0.7 and 0.3, respectively. The expected frequency of MN-blood group bearing organisms is likely to be
| 1. | 42% | 2. | 49% |
| 3. | 9% | 4. | 58% |
Subtopic: Hardy Weinberg Law |
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The type of natural selection where more individuals acquire value other than the mean character value is regarded as:
1. Stabilizing
2. Directional
3. Disruptive
4. Reverse
1. Stabilizing
2. Directional
3. Disruptive
4. Reverse
Subtopic: Hardy Weinberg Law |
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