Impossible Heritability Given Repeatability
If repeatability of trait is 0.35, then which of following value can't be the heritability of the trait-
- 0.40 — Correct Answer
- 0.30
- 0.05
- 0.15
Explanation:
Correct Answer: 0.40 (cannot be heritability)
Since Repeatability is the upper limit of Heritability, heritability cannot exceed repeatability.
Repeatability = 0.35. Therefore, heritability must be ≤ 0.35. A value of 0.40 > 0.35 is NOT possible as heritability.
Evaluation of Options
| Option | Possible as h²? | Reason |
|---|---|---|
| 0.40 | ✗ NOT possible | 0.40 > 0.35 (repeatability) |
| 0.30 | ✓ Yes | 0.30 ≤ 0.35 |
| 0.05 | ✓ Yes | 0.05 ≤ 0.35 |
| 0.15 | ✓ Yes | 0.15 ≤ 0.35 |
Key Relationship
Repeatability (r) ≥ Broad-sense heritability (H²B) ≥ Narrow-sense heritability (h²N)
- r = (VG + EP) / VP
- H²B = VG / VP
- h²N = VA / VP
📚 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.
