Ratio of Response to Selection and Selection Differential
The ratio of response to selection to the selection differential is termed as:
- Heritability in broad sense
- Heritability in narrow sense
- Realized heritability — Correct Answer
- Regression coefficient
Explanation:
Correct Answer: Realized heritability
R/S = Realized heritability (h²). This is the actual genetic gain observed relative to the selection differential applied.
Types of Heritability
| Type | Formula | Definition |
|---|---|---|
| Broad sense (H²ᴮ) | VG / VP | Ratio of genotypic variance to phenotypic variance |
| Narrow sense (h²ɴ) | VA / VP | Regression of breeding value on phenotypic value; h²ɴ ≤ H²ᴮ always |
| Realized heritability | R / S | Actual ratio of response to selection to selection differential |
📚 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.
