Forces Affecting Hardy-Weinberg Equilibrium — Not Systemic
Which of the following is NOT a systemic force affecting Hardy-Weinberg equilibrium?
- Mutation
- Migration
- Selection
- Random genetic drift — Correct Answer
Explanation:
Correct Answer: Random genetic drift
Random genetic drift (Sewall Wright effect) is a dispersive force, NOT a systemic force.
Forces Affecting H-W Equilibrium
| Force Type | Examples | Population Size | Predictability |
|---|---|---|---|
| Systemic forces | Mutation, Migration, Selection | Both large and small | Amount AND direction can be predicted |
| Dispersive forces | Random genetic drift (Sewall Wright effect) | Small population only | Only amount can be predicted, NOT direction |
Which force changes gene frequency fastest? → Selection
Which force changes gene frequency slowest? → Mutation
Effect of 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.
