Inbreeding Coefficients of Various Mating Systems
Inbreeding coefficient of progenies produced by selfing, parent–offspring mating, full sibs mating and half sibs mating during the first generation are respectively:
- 0.5, 0.25, 0.25, 0.125 — Correct Answer
- 0.5, 0.50, 0.50, 0.125
- 0.5, 0.50, 0.25, 0.125
- 0.5, 0.25, 0.50, 0.125
Explanation:
Correct Answer: 0.5, 0.25, 0.25, 0.125
Inbreeding Coefficients (Fx) by Mating Type
| Mating System | Coefficient of Relationship (Rxy) | Inbreeding Coefficient (Fx = ½ Rxy) |
|---|---|---|
| Selfing | 1.0 | 0.50 |
| Parent–offspring mating (Sire × Daughter or Son × Dam) | 0.50 | 0.25 |
| Full-sib mating | 0.50 | 0.25 |
| Half-sib mating | 0.25 | 0.125 |
| Single first cousin mating | 0.125 | 0.0625 |
| Half first cousin mating | 0.0625 | 0.03125 |
Note: Fx = ½ Rxy always. Selfing (self-fertilization) is the most severe form of inbreeding.
📚 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.
