True Statements About Repeatability of a Trait
Which of the following statements is/are true about repeatability of a trait?
- It is used to predict future performance from past records
- It is used to predict MPPA (Most Probable Producing Ability)
- It is the upper limit of heritability in broad sense and is used in making culling decisions
- All the above — Correct Answer
Explanation:
Correct Answer: All the above
All three statements about repeatability are correct.
Key Facts About Repeatability (r)
- Formula: r = (VG + EP) / VP, where EP = permanent component of environment.
- Definition: Regression of future performance on present performance.
- Repeatability is the upper limit of heritability (r ≥ h²).
- MPPA (Most Probable Producing Ability) / ERPA (Expected Real Producing Ability) is used for estimation of repeatability.
- Used in making culling decisions.
- Range: 0 to 1 (same as heritability).
- Estimated by intra-class correlation.
Example: If repeatability of a trait is 0.35, heritability cannot be 0.40 (since repeatability is the upper limit of heritability).
📚 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.
