Figure 1.

Breeding design for inbred-founded (right hand side) and outbred-founded (left hand side) populations from a given patriline. The light grey shaded area represents the part of the pedigree established under laboratory conditions to provide animals for this study. Laboratory-raised third generation animals (F3, dark gray shading) from seven patrilines were used as founders for the greenhouse populations. The unshaded area illustrates the two generations of offspring followed in Experiment 1.