Fig. 3From: A comprehensive study on size and definition of the core group in the proven and young algorithm for single-step GBLUPHierarchical clustering of genomic estimated breeding values obtained from different core definitions for average daily gain in nursery. Core size was equal to the number of largest eigenvalues explaining 99% of the variation in the genomic relationship matrix. MPA: most popular animals, both parents known and with own performance record; Rnd: a random subset of animals is sampled from all genotyped animals; Ped: animals were evenly selected from the pedigree sorted in genealogical order; Fam: from each full sib family, one progeny was allowed to be in the core group; Unrel: unrelated animals based on the genomic relationship were assigned to the core group; LPM: males with both parents known, without progeny, and without own performance records were used as core; LPF: females with both parents known, without progeny and own performance records were used as core; QR: animals selected based on a QR decomposition of the gene content matrixBack to article page