Results for random instances with a homozygous ideotype. This figure indicates the number of randomly generated instances with a homozygous ideotype for which the different presets of Gene Stacker completed within the applied time limit of 24 hours. Experiments were repeated with a maximum of 4–6 generations. Instances have 4–14 loci spread across 1–8 chromosomes and 2–8 parental genotypes. In total, 20 instances were generated for each number of loci.