Inverse Correlation Between Production Traits
Milk yield & fat % in dairy animals, number of eggs & size of eggs produced by hen has __________ relation-
- Positive correlation
- Negative correlation — Correct Answer
- No correlation
- None
Explanation:
Correct Answer: Negative correlation
Milk yield & fat% in dairy animals, and number of eggs & size of eggs in poultry are negatively correlated — as one increases, the other decreases.
Negative Correlation — Explanation
- Milk yield ↑, Fat% ↓: High-producing cows dilute the fat content; more milk but lower fat percentage.
- Number of eggs ↑, Size of eggs ↓: Hens laying more eggs tend to lay smaller individual eggs — body resources are divided among more eggs.
Complete Correlation Summary
| Type | Examples |
|---|---|
| Positive correlation | Milk yield & fat yield (kg); Egg size & egg weight; Birth weight & weaning weight |
| Negative correlation | Milk yield & fat%; Number of eggs & size of eggs |
| No correlation | Milk yield & horn length; Normal body temperature & body size |
Genetic Correlation — Causes
- Pleiotropy: Permanent cause
- Linkage: Temporary/transient cause
📚 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.
