Non-Systemic Force Affecting Hardy-Weinberg Equilibrium
Which of the following is NOT a systemic force affecting Hardy-Weinberg equilibrium?
- Random Genetic drift — Correct Answer
- Migration
- Mutation
- Selection
Explanation:
Correct Answer: Random Genetic drift
Random Genetic Drift (Sewall Wright effect) is a dispersive force, NOT a systemic force. It acts only in small populations and can be predicted in amount but NOT in direction.
Forces Affecting Hardy-Weinberg Equilibrium
| Type | Forces | Population size | Predictable |
|---|---|---|---|
| Systemic forces | Mutation, Migration, Selection | Both large and small | Amount AND direction |
| Dispersive forces | Random Genetic Drift (Sewall Wright effect) | Small populations only | Amount only (NOT direction) |
Note: Among systemic forces, Selection changes gene frequency fastest, while Mutation changes it slowest. Migration can be predicted in both amount and direction.
📚 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.
