Fig. 2

Quantile-quantile (Q-Q) of P-values of SNPs from single SNP regression mixed linear model for subclinical ketosis. The blue dots represent the –log₁₀(P-values) of the observed test statistics for no association for a. subclinical ketosis in first lactation (SCK1) and b. subclinical ketosis in later lactations (SCK2). The red line denotes the expected pattern under the null hypothesis. Deviations between the red line and blue dots indicate how the observed probability of the test statistics deviate from the expected