Factors Affecting Selection Intensity
Selection intensity is higher when-
- Fewer animals are selected — Correct Answer
- Large no. of animals are selected
- Both
- None
Explanation:
Correct Answer: Fewer animals are selected
Selection intensity (i) is inversely related to the proportion of animals selected. When fewer animals are selected (smaller proportion p), the selection intensity is higher — only the most elite animals are retained.
Response to Selection Formula
R = i × h² × σp = i × σA × rAP
Higher i → greater R (Response to selection) → faster genetic progress.
Factors Affecting Intensity of Selection (i)
- Proportion of population selected (fewer selected = higher i)
- Phenotypic standard deviation (σp)
- Sex of animal under selection
- Number of traits under selection
- Accurate measurement of the trait
📚 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.
