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(a) Local ancestry inference on chromosome 18 using MendelImpute. Sample 1 is Puerto Rican (PUR), sample 2 is Peruvian (PEL) and sample 3 is African American (ASW). Other abbreviations are explained in the text. (b) All (n = 504) samples’ global ancestry proportions estimated using all chromosomes. Each column is a sample’s admixture proportion. Samples used in (a) are located at index 2, 339 and 500.
