Prediction of Migration Effects
Effect of Migration in a population can be predicted-
- Only in amount
- Only in direction
- Amount & direction both — Correct Answer
- None of the above
Explanation:
Correct Answer: Amount & direction both
Migration (gene flow) is a systemic force. Because its parameters are mathematically definable, the change in gene frequency due to migration can be predicted in both amount (how much the frequency changes) and direction (whether it increases or decreases).
Formula for Gene Frequency Change Due to Migration
Δq = m(qm − q₀)
- m = proportion of migrants entering population
- qm = gene frequency of migrants
- q₀ = gene frequency of base (recipient) population
- Direction: If qm > q₀ → gene frequency increases; if qm < q₀ → decreases
Systemic vs Dispersive Forces — Predictability
| Force | Type | Predictable in Amount? | Predictable in Direction? |
|---|---|---|---|
| Mutation, Migration, Selection | Systemic | Yes | Yes |
| Random Genetic Drift | Dispersive | Yes (variance only) | No |
📚 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.
