Soybean seed, plants, and products therefrom having an ultra-low trypsin inhibitor phenotype with no additional chemical or physical heat treatment. Also disclosed are soybeans having the ultra-low trypsin inhibitor phenotype due to the presence of the Kunitz allele and three additional alleles. Also disclosed are soybean seed and plants having a unique content of trypsin inhibitor units and lineage, where said phenotype is due to the interaction or mutations of one or more genes. Also disclosed are plants and plant parts derived from growing the soybean seed herein.
