What does selection intensity measure in breeding practices?

What does selection intensity measure in breeding practices?

• A. Picky nature of animal breeders
• B. Genetic variance in the population
• C. Overall breeding success rates
• D. Animal fertility levels

Answer: (A)

Selection intensity is a critical concept in breeding practices that assesses the degree to which a breeder is selective about which individuals are allowed to reproduce. It specifically quantifies the difference between the mean performance of selected individuals and the overall population mean. The higher the selection intensity, the more selective the breeder is, leading to a greater likelihood of enhancing desired traits in the offspring.

This concept ties closely to the idea that a breeder who is very particular in their choices will focus on individuals that exhibit superior traits, making "picky nature of animal breeders" a relevant descriptor. Essentially, selection intensity reflects how stringent the breeder’s criteria are, which directly influences the genetic progress achievable within a breeding program.