Repeatability of a trait includes the effects of permanent environment in addition to which genetic component?
Correct answer: D. Additive genetic variance
- A. Only sex-linked variance
- B. Only mutation variance
- C. Only temporary environment
- D. Additive genetic variance
Explanation
Repeatability includes additive genetic effects and permanent environmental effects that continue to influence repeated records. Temporary environmental effects contribute to individual records but not to repeatability.
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About Animal Breeding and Genetics
Covers genes, chromosomes, inheritance, genetic variation, mutations, heritability and quantitative traits in livestock. It also includes selection methods, breeding systems, inbreeding, crossbreeding, heterosis and evaluation of traits such as growth, milk yield, fertility and disease resistance.
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