Trends of genetic parameters in the candidate population. A) Accuracy of selection. B) Genetic level. C) Level of inbreeding. D) Genetic variance. Trends of genetic parameters in the candidate population in the MatPat scheme (solid line): half of the test sibs were maternal double haploids and the other half were paternal double haploids in G2 and in the RAND scheme (dashed line): candidate and test sibs were mated at random in G1; in each scheme there were 1500 males and 1500 female candidate sibs, 50 sires and 50 dams were selected each generation and heritability was 0.05.