Figure 2. Founder events and consanguinity leads to high rates of homozygosity and relatedness in Indians.

(A) Genome-wide homozygosity in LASI-DAD samples by region, compared to 1000G individuals from East Asia, Europe, and South Asia. Black lines show homozygous segments >8 cM, colored lines include shorter segments. (B) For each individual in LASI-DAD and 1000G, we identified the “closest related individual” as the individual who shares the highest total amount of identity-by-descent (IBD) segments, measured in centimorgans (cM). The Y-axis shows the percentage of individuals sharing ≥ x cM (X-axis). For LASI-DAD individuals, we inferred the mean and the standard error by resampling 500 individuals (dashed lines represent the mean and 95% CI). The vertical dashed lines indicate the expected value of the total IBD sharing for kth degree cousins. This figure was adapted from 72.