Table 2. For each region, the posterior probability for a tree that supports (1) reciprocal monophyly of chimpanzees and bonobos (2) and monophyletic grouping of bonobos (3) chimpanzees as a whole (3–6) each population of chimpanzee separately.

Region	Reciprocal monophyly	Monophyly of
		Bonobos	Chimpanzees	Western chimpanzees	Nigerian-Cameroonian chimpanzees	Eastern chimpanzees	Central chimpanzees
mtDNA	1	1	1	0.999	1	0	0
a	0.003	1	0.003	0.002	0	0	0
b	1	1	1	1	0	0	0
c	0.494	1	0.494	0.077	0	0	0
d	0.955	1	0.955	0	0	0	0
e	1	1	1	0	0	0	0
f	0.223	1	0.223	0.956	0	0	0
g	0	1	0	0	0	0	0
h	0.076	0.913	0.081	0	0	0	0
i	0.946	0.957	0.989	0	0	0	0
J	0.005	1	0.005	0.607	0	0	0
k	0.375	0.998	0.377	0	0	0	0
l	0.077	1	0.077	0.002	0	0	0
m	0.002	1	0.002	1	0	0	0
n	0	0.999	0	1	0	0	0
o	0.163	1	0.163	0	0	0	0

To compute this posterior probability, we counted in how many trees from the posterior distribution was a given population monophyletic, and in how many trees were both bonobos and chimpanzees monophyletic. For the text, we arbitrarily defined a tree as showing support for monophyly if the posterior probability >95% and as showing support for paraphyly if the posterior probability <5%.