Soybean nested association panel with 2 families (\(fam\)) containing 196 indiviuals. Genotypic matrix (\(gen\)) have 376 SNP across 20 chromosome (\(chr\)). Phenotypic information (\(y\)) regards the proportion of tetra-seed pods. Data provided by Rainey Lab for Soybean Breeding and Genetics, Purdue University.