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Q. No.The Hardy-Weinberg principle is used to:
1.
Explain genetic drift in small populations.
2.
Predict the outcome of genetic mutations.
3.
Demonstrate the effects of natural selection.
4.
Describe the conditions under which allele frequencies in a population remain constant.
Subtopic: Hardy Weinberg Law |
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Homologous structures in different species indicate:
| 1. | Convergent evolution |
| 2. | Divergent evolution from a common ancestor |
| 3. | Similar environmental conditions |
| 4. | Random genetic drift |
Subtopic: Concept of Organic Evolution: Evidence |
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Which statement best describes the theory of natural selection proposed by Darwin?
| 1. | The fittest individuals produce the most offspring and are selected by nature. |
| 2. | Evolution occurs through sudden mutations without environmental influence. |
| 3. | All individuals in a population have equal chances of survival and reproduction. |
| 4. | Evolution is a predetermined and directed process. |
Subtopic: Darwin's Theory | Additional Theories of Darwin |
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Consider the given two statements:
| Assertion (A): | Mutation can lead to variation in a population and drive evolutionary changes. |
| Reason (R): | Mutations are always directional and result in advantageous traits that improve survival. |
| 1. | Both (A) and (R) are True and (R) is the correct explanation of (A). |
| 2. | Both (A) and (R) are True but (R) is not the correct explanation of (A). |
| 3. | (A) is True but (R) is False. |
| 4. | (A) is False but (R) is True. |
Subtopic: Mechanism of Evolution |
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In the Miller-Urey experiment, which gases were used to simulate the atmosphere of early Earth?
| 1. | Nitrogen, oxygen, water vapor, and carbon dioxide |
| 2. | Methane, ammonia, hydrogen, and water vapor |
| 3. | Carbon dioxide, oxygen, nitrogen, and ammonia |
| 4. | Oxygen, methane, water vapor, and nitrogen |
Subtopic: Urey & Miller Experiment |
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What does Hardy- Weinberg equation p2 + 2pq + q2 = 1 convey that the sum total of all the allelic frequencies is
1. Zero
2. One
3. Less than 1
4. More than 1
1. Zero
2. One
3. Less than 1
4. More than 1
Subtopic: Hardy Weinberg Law |
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Adaptive radiation leads to which of the following?
| 1. | Increased competition among species |
| 2. | Decreased speciation rates |
| 3. | Limited morphological diversity among species |
| 4. | Rapid divergence of traits among populations inhabiting a given geographical area. |
Subtopic: What is Adaptive Radiation |
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Which of the following describes homologous organs?
| 1. | Organs in different species that have different structures but perform similar functions due to convergent evolution. |
| 2. | Vestigial organs that have lost their original function due to evolutionary changes. |
| 3. | Organs in different species that have a similar structure and evolutionary origin but may perform different functions. |
| 4. | Organs that are identical in both structure and function across all species, indicating no evolutionary changes. |
Subtopic: Concept of Organic Evolution: Evidence |
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What is the correct definition of genetic equilibrium?
| 1. | The state in which new alleles constantly appear due to mutation and are balanced by natural selection. |
| 2. | A condition where genetic variation is completely eliminated in a population, leading to a single phenotype. |
| 3. | The condition where the rate of mutations equals the rate of migration in a population. |
| 4. | A state in which allele frequencies in a population remain constant over generations, provided that evolutionary forces like mutation, selection, and gene flow are absent. |
Subtopic: Hardy Weinberg Law |
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Which of the following correctly describes the difference between Darwin’s theory of evolution and Hugo de Vries’ theory of mutation?
| 1. | Darwin's theory suggests gradual accumulation of small variations, while de Vries' theory suggests that mutations cause large, sudden changes. |
| 2. | Darwin's theory implies mutations are random, while de Vries believed in directional variation through mutation. |
| 3. | Both Darwin and de Vries believed that mutations were the primary cause of evolution. |
| 4. | Darwin and de Vries both emphasized that minor, heritable variations led to speciation. |
Subtopic: Hugo De Vries Theory of Evolution |
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