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Table 4 Estimates of demographic parameters in the Southwest and Southeast edges of the Bantu expansions

From: On the edge of Bantu expansions: mtDNA, Y chromosome and lactase persistence genetic variation in southwestern Angola

 

N1

N2

NA

m1

m2

2N1m1

2N2m2

t (years)

Y chrom

        
 

10020

5510

1195

0

0

0

0

1950

 

(6684–21557)

(3313–12057)

(647–2372)

(0–4 × 10-3)

(0–6 × 10-3)

(0–80.2)

(0–66.1)

(1388–2940)

mtDNA

        

A

33212

31885

7090

2.6 × 10-4

5.5 × 10-4

17

35

25410

 

(22680–44905)

(23592–46315)

(3441–16129)

(9.0 × 10-5-4.5 × 10-3)

(2.8 × 10-4-4.7 × 10-3)

(6–297)

(18–298)

(14612–39135)

B

35700

30558

7173

2.4 × 10-4

3.0 × 10-3

17

184

24978

 

(24256–46066)

(23055–46315)

(3607–17041)

(5.0 × 10-5-3.9 × 10-3)

(4.5 × 10-4-4.8 × 10-3)

(4–275)

(21–296)

(13749–38319)

Joint

        

A

6894

6150

1394

2 × 10-3

7 × 10-3

28

86

4133

 

(4631–9571)

(4403–8619)

(343–2246)

(4.7 × 10-4-1.6 × 10-2)

(1.4 × 10-3-1.6 × 10-2)

(6–215)

(17–191)

(3071–13384)

B

7558

6274

1372

1 × 10-3

9 × 10-3

15

113

3981

 

(5417–9929)

(4884–8578)

(933–2433)

(4.5 × 10-4-1.1 × 10-2)

(4.5 × 10-4-1.5 × 10-2)

(7–211)

(6–185)

(3147–6332)

  1. N1-Current effective population size in the Southwest edge; N2-Current population size in the Southeast edge; NA-Ancestral effective population size; m1-Probability of migration from Southeast to Southwest Africa, per gene copy per generation; m2-Probability of migration from Southwest to Southeast Africa, per gene copy per generation; 2N1m1-Effective number of genes migrating into Southwest Africa, per generation; 2N2m2-Effective number of genes migrating into Southeast Africa, per generation; t-time since divergence from a common ancestor. 95% credibility intervals are given in parentheses. A and B show the outcome of runs with different probability density peaks for m2.