Derenko et al. (2007) examined a sample of 103 Koreans from South Korea and found that they belonged to the following mtDNA haplogroups: 39.8% D (including 32.0% D4 and 7.8% D5), 20.4% B (including 12.6% B4 and 7.8% B5), 9.7% M7, 6.8% A (including 3.9% A5 and 2.9% A4(xA2, A8)), 6.8% G (including 2.9% G2a, 1.9% G1, and 1.9% G3), 4.9% F1, 4.9% M8a2, 2.9% N9a, 1.9% M9a, 1.0% C(xC1, C4, C5), and 1.0% Y.
