True Statements on Individual Selection
Which is true about individual selection-
- Animals are selected on the basis of their own phenotype
- Generation interval is shortest among all the basis of selection
- This gives direct estimate of breeding value
- All the above — Correct Answer
Explanation:
Correct Answer: All the above
All three statements are true about Individual selection (Mass selection).
Individual Selection — Key Features
- Basis: Animals are selected based on their own phenotypic value (observed performance).
- Generation interval: Shortest among all bases of selection — breeding can start as soon as the animal reaches sexual maturity, without waiting for progeny data.
- Direct estimate of BV: When h² is high, phenotype closely reflects the true breeding value (BV = 2 × mean deviation of progeny from population mean).
Comparison of Selection Bases
| Basis | Based on | Most Effective When | Generation Interval |
|---|---|---|---|
| Individual selection | Own phenotype | h² high | Shortest |
| Pedigree selection | Ancestor performance | h² high | Medium |
| Progeny testing | Offspring performance | h² low; sex-limited traits | Longest |
| Family selection | Collateral relatives | h² low | Medium |
📚 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.
