Patent ID: 7402731

Claim:
A method of preparing a soybean seed mix, wherein all the seed of the mix have a genetically modified trait and a fraction of the seed is heterozygous or homozygous for seed coat color, the method comprising: i) planting homozygote black seed coat soybean plants having genotype RRiiTT in separate, alternate rows in the same field as cultivars that have a genetically modified trait and that are not homozygote black seed coat soybean plants; ii) harvesting grain from the rows planted with the cultivars that contain the genetically modified trait and that are not homozygote black seed coat soybean plants; and iii) replanting the grain in separate, alternate rows in the same field as homozygote black seed coat soybean plants having genotype RRiiTT and harvesting the grain over at least one additional generation; wherein only the rows planted with the grain are harvested; wherein the grain obtained from step iii constitutes a soybean seed mix.