What is the second use of heritability in animal breeding?

What is the second use of heritability in animal breeding?

• A. The phenotypic value
• B. The environmental variance
• C. The sex of the animal
• D. The animals breeding value (EBV)

Answer: (D)

The second use of heritability is to translate genetic differences into a practical tool for selection by estimating each animal’s breeding value, i.e., the additive genetic merit it can pass to its offspring. This is captured by the estimated breeding value (EBV), a statistical prediction that combines an animal’s own performance with its pedigree (and sometimes genomic data) to infer how much its genes will influence progeny. By using EBVs, breeders select animals based on their true genetic potential rather than just how they perform in a particular environment, which improves the population over generations. The other options describe observed performance (phenotypic value), components of variance (environmental variance), or non-genetic factors (sex), none of which directly yield the genetic merit used for selection.

The second use of heritability is to translate genetic differences into a practical tool for selection by estimating each animal’s breeding value, i.e., the additive genetic merit it can pass to its offspring. This is captured by the estimated breeding value (EBV), a statistical prediction that combines an animal’s own performance with its pedigree (and sometimes genomic data) to infer how much its genes will influence progeny. By using EBVs, breeders select animals based on their true genetic potential rather than just how they perform in a particular environment, which improves the population over generations. The other options describe observed performance (phenotypic value), components of variance (environmental variance), or non-genetic factors (sex), none of which directly yield the genetic merit used for selection.