The tendency of population to remain in genetic equilibrium may be disturbed by

Options

A. lack of mutation
B. lack of random mating
C. random mating
D. lack of migration

Answer

To answer the question about the factors that disturb the genetic equilibrium in a population, we can follow these steps:

### Step-by-Step Solution:

1. **Understanding Genetic Equilibrium**:
- Genetic equilibrium refers to a state where the allele frequencies in a population remain constant over generations. This concept is based on the Hardy-Weinberg principle, which states that a population will remain in genetic equilibrium if certain conditions are met.

2. **Hardy-Weinberg Principle**:
- According to the Hardy-Weinberg principle, the conditions for a population to remain in genetic equilibrium include:
- Large population size (to minimize genetic drift)
- Random mating (no preference for mates)
- No mutations (no new alleles introduced)
- No migration (no gene flow in or out of the population)
- No natural selection (all individuals have equal chances of survival and reproduction)

3. **Identifying Factors that Disturb Equilibrium**:
- Now, we need to identify which factors can disturb this equilibrium:
- **Lack of Mutation**: This would not disturb equilibrium, as mutations introduce new alleles, which can change allele frequencies.
- **Lack of Random Mating**: If mating is not random, certain alleles may become more common or rare, thus disturbing the equilibrium.
- **Lack of Migration**: Similar to mutation, if there is no migration, allele frequencies remain stable, so this does not disturb equilibrium.

4. **Conclusion**:
- The correct answer is that the tendency of a population to remain in genetic equilibrium may be disturbed by a lack of random mating. This lack leads to non-random selection of mates, which can change allele frequencies and disrupt the equilibrium.

### Final Answer:
The tendency of a population to remain in genetic equilibrium may be disturbed by a lack of random mating.

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