Slowest Force Changing Gene Frequency
Which force changes the gene frequency slowest:
- Mutation — Correct Answer
- Migration
- Selection
- Random drift
Explanation:
Correct Answer: Mutation
Mutation is the slowest force for changing gene frequencies. Although it is the ultimate source of all new genetic variation, natural mutation rates are extremely low (10⁻⁵ to 10⁻⁶ per locus per generation), making its direct effect on allele frequencies negligible in the short term.
Speed of Forces — Comparison
| Force | Speed | Typical Rate/Effect |
|---|---|---|
| Mutation | Slowest | 10⁻⁵ to 10⁻⁶ per locus per generation |
| Migration | Moderate | Depends on m, qm, q₀ |
| Selection | Fastest | Acts every generation; directional |
Role of Mutation
- Mutation is the ultimate source of all genetic variation.
- Multiple alleles in a population are produced by mutation.
- Hugo de Vries coined the term and proposed the Mutation Theory of Evolution in Oenothera lamarckiana.
📚 About this Topic — Animal Genetics & Breeding
This multiple choice question is from Animal Genetics & Breeding, Animal Refresher. It has 4 options with a detailed explanation of the correct answer. Practice more MCQs from Animal Genetics & Breeding to strengthen your preparation.
