Test your knowledge: Fixed effects

Phenotype performance = genetic effects + non-genetic (or environmental) effects

Fixed effects refer to:

Fixed effects are non-genetic factors that we know have an impact on animal performance. They result in non-genetic differences in performance between animals.

Some examples of fixed effects for a trait like yearling weight or 400 day weight are:

Two bull calves were born on the same day, and were raised in the same environment until their 200 day weight. The only difference between the two bull calves is the age of their dams.

Using only the information provided, which bull calf will have a higher breeding value?