Figure 1From: Genetic variation in the odorant receptors family 13 and the mhc loci influence mate selection in a multiple sclerosis datasetP -P plot of SNP level results. p values of correlation among couples are plotted for all SNPs as a function of the normal distribution. The black line is equal to the expectation on H0. Overall, the data follows the normal distribution with an excess in the tail at p < 10-4.Back to article page