Unit of Selection in Family Selection
The unit of selection in family selection is-
- Family mean — Correct Answer
- Pedigree information
- Individual performance
- Sib performance
Explanation:
Correct Answer: Family mean
In Family Selection, the unit of selection is the family mean. Entire families (groups of related individuals) are kept or culled based on the average performance of the family, not individual merit.
Methods of Selection / Aids to Selection
| Method | Basis | Best when |
|---|---|---|
| Individual / Mass Selection | Performance of the individual itself | High heritability traits |
| Pedigree Selection | Performance of ancestors | High heritability traits |
| Family Selection | Family mean (collateral relatives) | Low heritability traits |
| Progeny Testing | Performance of progeny | Low heritability traits; sire selection |
Special Notes
- Individual selection is the simplest, most rapid and most commonly used method.
- Progeny testing is the most accurate and best basis of selection.
- Family selection and Progeny testing are effective when heritability is low.
📚 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.
