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mtDNA copy numbers were calculated for individuals for which DNA-seq was available (N = 436, 1000 Genomes Project). No differences were detected in mtDNA copy numbers between L-haplogroup and non-L-haplogroups (Kruskal-Wallis test, KW-H (1436) = 0.262, p = 0.6088). X-axis–L-haplogroup versus non-L-haplogroup individuals, Y-axis–calculated mtDNA copy numbers.
