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. Author manuscript; available in PMC: 2018 Sep 1.
Published in final edited form as: Am J Med Genet B Neuropsychiatr Genet. 2017 Jul 10;174(6):619–630. doi: 10.1002/ajmg.b.32568

Figure 2.

Figure 2

Ancestry inference using SNPs versus methylation probes in 128 participants of the Marine Resiliency Study (MRS). (a) Principal component (PC) plot showing ancestry inferred using SNPs from a genome-wide association study (GWAS). PC plots based on CpG probes with SNPs within 1 bp distance (b) and with SNPs within 10 bp distance (c), respectively. Subject are placed into four ancestral groups based on ancestry estimates using ancestry-informative SNPs and a reference panel (see methods).