Table 1

Estimates of European ancestry and proportional African ancestries in African Americans by US region of birth

U.S. region of birth

Numbera

European ancestry (%)

Total African ancestry (%)b


Mandenka

Yoruba

Bantu

Biaka

Mbuti

San


West

58 (58)

19.9 ± 8.5

18.9 ± 4.1

64.0 ± 5.3

13.7 ± 4.3

1.1 ± 0.8

0.2 ± 0.2

2.0 ± 0.5

South

12 (10)

24.0 ± 15.6

22.6 ± 5.7

60.0 ± 9.5

14.2 ± 5.4

1.1 ± 0.7

0.2 ± 0.4

1.9 ± 1.0

Midwest

4 (4)

19.4 ± 10.2

19.4 ± 2.0

64.0 ± 5.5

13.1 ± 5.5

0.9 ± 0.9

0.3 ± 0.3

2.2 ± 0.7

Southwest

2 (2)

17.0 ± 6.5

21.4 ± 0.7

65.1 ± 1.0

10.5 ± 0.3

1.1 ± 0.4

0.1 ± 0.0

1.7 ± 1.0

All

136 (128)

21.9 ± 12.2

19.2 ± 4.0

63.7 ± 4.9

13.8 ± 3.8

1.0 ± 0.8

0.2 ± 0.3

2.0 ± 0.6


aNumbers in parentheses are those used for estimation of African ancestries after removal of eight individuals with high values of European ancestry; birth-location information was missing for 60 individuals.

bBased on frappe analysis of African genotypes only (n = 128).

Zakharia et al. Genome Biology 2009 10:R141   doi:10.1186/gb-2009-10-12-r141

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