What is a possible consequence of low progeny equivalency in a selective breeding program?

What is a possible consequence of low progeny equivalency in a selective breeding program?

• A. Increased genetic improvement
• B. Greater accuracy of trait predictions
• C. Less reliable genetic evaluations
• D. Higher breeding success rates

Answer: (C)

Low progeny equivalency in a selective breeding program can lead to less reliable genetic evaluations. Progeny equivalency refers to the consistency and genetic similarity among offspring from specific breeding pairs. When progeny equivalency is low, it indicates a greater variance in the genetic outcomes among those offspring. This variability makes it challenging to accurately assess the value of certain traits and their expression in the progeny.

In selective breeding, reliable genetic evaluations are critical for making informed decisions about which individuals to retain for future breeding. If the offspring produced do not consistently reflect the desired traits due to low progeny equivalency, predictions based on previous evaluations become less accurate. This could ultimately hinder the overall goals of the breeding program, as it becomes harder to select the best candidates for improving traits.

In contrast, increased genetic improvement, greater accuracy of trait predictions, and higher breeding success rates are outcomes that would generally correlate with high progeny equivalency, where there is a more uniform expression of genetic traits among the offspring. Thus, the correct answer highlights a significant challenge in breeding programs where progeny equivalency is inadequate.