Increasing Order of Efficiency of Multi-Trait Selection Methods
What is the correct increasing order of efficiency of methods of multi-trait selection?
- Tandem selection < Independent culling < Selection index — Correct Answer
- Tandem selection < Selection index < Independent culling
- Independent culling < Selection index < Tandem selection
- Independent culling < Tandem selection < Selection index
Explanation:
Correct Answer: Tandem selection < Independent culling < Selection index
The correct increasing order of efficiency is: Tandem < Independent culling < Selection index (Total scorecard).
Methods of Multi-Trait Selection (Hazel and Lush, 1942)
| Method | How it works | Efficiency |
|---|---|---|
| Tandem selection | One trait at a time; least flexible | Least efficient |
| Independent culling | Minimum standard set for each trait; fail any = culled | Intermediate |
| Selection index | All traits simultaneously with proper weightings; single numerical score | Best / Most efficient |
Selection index (given by Hazel and Lush) is the best method because it accounts for genetic correlations between traits and assigns economically appropriate weights.
📚 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.
