Figure 3
Genotype concordance and genotype PCA on the 1,262 unique individuals that passed genotype QC. (a) We observe a strong correlation between the number of sequenced bases and the number of high-quality genotype calls. (b) Genotyping is only possible in regions with gene expression. DR2, dosage r 2. (c) In 95% of the variants imputation increased genotyping concordance. (d) PCA on the genotypes of all 1,262 samples reveals population structure with the expected European, Asian and African clusters.