Figure 5. Fraction of 23andMe individuals with detectable distant relatives within subsamples inferred using IBD_half.

A) The fraction of individuals with at least one predicted relative (2^nd–9^th cousin) given datasets of varying size. All datasets were drawn from a dataset of 5000 individuals with European ancestry. All closely related individuals (i.e., 1^st or 2^nd generation family) were removed before performing the analysis. B) The number of predicted cousins of each degree of cousinship given the dataset size. Predictions based on parameters obtained from simulations (Figure 4e).