Fig. 1
From: Heritability and genome-wide association analyses of fasting plasma glucose in Chinese adult twins
Quantile-quantile (Q-Q) plot for genome-wide association study (GWAS) of the fasting plasma glucose level. a The Q-Q plot of GWAS based on typed SNP data; b The Q-Q plot of GWAS based on imputed SNP data. The x-axis shows the -log10 of expected P-values of the association from the chi-square distribution, and the y-axis shows the -log10 of P-values from the observed chi-square distribution. The black dots represent the observed data with the top hit SNP being coloured, and the red line is the expectation under the null hypothesis of no association