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Table 2.

Evolutionary Analysis of Primate RNase k6

Species	K _a	K _s	K _a/K _s
Great Apes
P. troglodytes	0.005	0.017	0.29
G. gorilla	0.003	0.025	0.12
p. pygmaeus	0.009	0.069	0.13
Old World monkeys
C. aethiops	0.015	0.080	0.19
M. talapoin	0.021	0.080	0.26
P. hamadryas	0.013	0.070	0.19
M. mulatta	0.013	0.052	0.25
New World monkeys
A. trivirgatus	0.032	0.061	0.52
S. sciureus	0.064	0.098	0.65
S. oedipus	0.050	0.063	0.79

[i] Nonsynonymous substitutions per nonsynonymous site (K _a) and synonymous substitutions per synonymous site (K _s) ratios of each nonhuman primate vs. human were calculated as described (Li 1993). Common names for each primate are listed in the legend to Fig. 1.