Table 3.

Gene flow between three human populations (Egypt, Nubia, Sudan) in the Nile valley (32)

Population i	Θ	2Nfm
		Sudan → i	Nubia → i	Egypt → i
Sudan	0.122	—	3.19	3.70
	0.094–0.158		1.70–5.61	2.06–6.29
Nubia	0.107	37.50	—	28.41
	0.072–0.162	27.04–54.97		19.11–43.16
Egypt	0.108	5.14	4.45	—
	0.169–0.372	2.83–8.78	2.38–7.78

A total of 225 mtDNA control region Domain I sequences from the database of (ref. 33) were analyzed. The maximum likelihood estimate and the 95% profile confidence intervals of population sizes Θ = 2N_fμ, where N_f is the effective population size of females and μ is the mutation rate per generation and per site, and 2N_fm, the number of immigrant females per generation, are shown. The receiving populations are in the rows.