Low Heritability Traits
Heritability is low in-
- Lactation yield
- Body weight
- Litter size — Correct Answer
- All the above
Explanation:
Correct Answer: Litter size
Litter size is a reproductive trait with low heritability (h² < 0.20) because it is predominantly controlled by non-additive gene action and environment.
Heritability Classification of Traits
| Category | h² | Examples |
|---|---|---|
| Low (reproductive/fitness traits) | <0.20 | Litter size, conception rate, calving interval, hatchability, fertility, viability |
| Medium (productive traits) | 0.20–0.40 | Lactation yield, egg production, fat % |
| High (growth/structural traits) | >0.40 | Body weight, growth rate, feed efficiency, carcass quality, fleece weight |
Note: Lactation yield (productive trait) = medium h². Body weight (growth trait) = high h². Both are NOT low h² traits.
📚 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.
