Breeding value (BV) is associated with a single locus.

Breeding value (BV) is associated with a single locus.

• A. It is not genetic
• B. True
• C. It refers to genetic merit from a single locus
• D. It is environmental

Answer: (C)

Breeding value is the additive genetic merit that can be passed to offspring, coming from the cumulative additive effects of alleles across many genes throughout the genome. It is a genetic quantity, reflecting what the individual can contribute to its progeny, and it is shaped by the combined effects of numerous loci, not by a single gene. Because additive effects are spread across many loci, BV is not associated with just one locus. The idea that BV comes from a single locus misstates what BV represents. BV is about genetic merit derived from multiple loci, rather than environmental factors or a single-gene effect.

Breeding value is the additive genetic merit that can be passed to offspring, coming from the cumulative additive effects of alleles across many genes throughout the genome. It is a genetic quantity, reflecting what the individual can contribute to its progeny, and it is shaped by the combined effects of numerous loci, not by a single gene.

Because additive effects are spread across many loci, BV is not associated with just one locus. The idea that BV comes from a single locus misstates what BV represents. BV is about genetic merit derived from multiple loci, rather than environmental factors or a single-gene effect.