Notice that the net breeding values of parents are close to what we obtained earlier from the GCA model where we treat the genetic groups (prov) as fixed. For example, the breeding value prediction for parent 191 from the genetic groups model above is 11.32, compared to 11.31 estimated by a linear function of effect estimates. The prediction file from the genetic groups model produces BV predictions for all members of the pedigree on the same scale. No additional computation (such as multiplying GCA values by two) is needed.