mkm_n_covariates. age and sex for 50 samples, each one has two traits
mkm_n_gene. genotypes for 50 samples for two genes and each gene has 50 SNPs
mkm_n_geneid. ordered sample id as in mkm_n_gene (50 samples)
mkm_n_weights. weight for each SNP
mkm_n_ph. sample id, trait value and trait label