Table 1 Population mixture and evidence of sex bias in three groups from the Swahili coast

From: Entwined African and Asian genetic roots of medieval peoples of the Swahili coast

 

Mtwapa

Manda

Kilwa

 

Africa

Persia

India

Africa

Persia

India

Africa

Persia

mtDNA haplogroups (N)

29

-

1

3

-

-

1

-

Y chromosome haplogroups (N)

4

16

-

-

3

-

-

1

Ancestry sources, autosomes

56–58%

34–39%

4–9%

30–34%

55–65%

3–13%

72–76%

24–28%

Ancestry sources, X chromosome

65–75%

0–24%

7–39%

49–70%

0–74%

0–75%

83–100%

0–17%

Z-score autosomes vs X chromosome

−4.7

3.4

−2.0

−5.0

1.4

−0.5

−3.3

3.3

Female ancestry

69–97%

0%

33–100%

100%

0–10%

0–100%

69–100%

0%

Male ancestry

3–31%

100%

0–67%

0%

90–100%

0–100%

0–31%

100%

Persian (proportion of total Asian)

84–87%

84–97%

89–100%

Estimated admixture dates

ad 795–1085

AD 708–1219

  1. We compared ancestry estimates on chromosomes 1–22 and the X chromosome to infer proportions from female or male ancestors (Methods). Ranges are 95% confidence intervals, truncated if extending outside 0–100%. The proportion of ancestry from one sex was set to 0% or 100% if the range fell beyond these limits.