Table 1.

The value of Ŝ estimated from Eq. 10 and the DNA sequence data described in Table 3

Human vs.	No. of loci (m)	Ŝ
Human (y = 0)	48	2.151
Chimpanzee	23	0.960
Gorilla	14	0.792
OWM	46	1.011
NWM	8	1.124

If the substitution process is Poisson (c = 1), the value of Ŝ should range from 1 to 2 depending on the relative values of x and y.