Effect of marker density and trait heritability on the accuracy of genomic prediction over three generations

The aim of this study was to determine the effect of marker density, level of heritability, number of QTLs, and size of training set on the genomic accuracy over three generations. Thereby, a trait was simulated with heritability of 0.10, 0.25 or 0.40. For each animal, a genome with 20 chromosomes, 1 Morgan each, was simulated. Different marker densities (2000, 4000 and 6000 markers) and 400 and 600 randomly distributed QTLs were simulated. Marker density, size of training set, and heritability level significantly affected the genomic accuracy (P