The Probability Density Function (PDF) of ancestry proportions in AJ and in simulations.

<p>The ancestry proportions in AJ were computed using LAI (<i>RFMix</i>). Simulations are of 1000 genomes with a history of an admixture pulse 32 generations ago between Middle-Eastern, Southern EU, Eastern EU, and Western EU populations. The density was estimated using a normal kernel. The admixture time was estimated by fitting the average standard deviation of the ancestry proportions across all chromosomes to the AJ data, where each chromosome was weighted by the square root of its length in cM. The confidence interval ([31,37] generations) was obtained by resampling AJ individuals, with replacement, 1000 times.