Table 3.

Exact Mean Coalescence Times and F_ST Values for 3-Vertex Motifs.

Motif	${\overline{t}}_{11}$	${\overline{t}}_{22},\hspace{0.17em}{\overline{t}}_{33}$	${\overline{t}}_{12},\hspace{0.17em}{\overline{t}}_{13}$	${\overline{t}}_{23}$	${\overline{F}}_{12},\hspace{0.17em}{\overline{F}}_{13}$	${\overline{F}}_{23}$
	1	1	$\infty$	$\infty$	1	1
	1	2	$\infty$	$2(1+\frac{1}{2M})$	1	$\frac{1}{1+4M}$
	$\frac{8}{3}$	$\frac{8}{3}$	$\frac{8}{3}(1+\frac{5}{8M})$	$\frac{8}{3}(1+\frac{1}{M})$	$\frac{1}{1+\frac{16}{5}M}$	$\frac{1}{1+2M}$
	3	3	$3(1+\frac{2}{3M})$	$3(1+\frac{2}{3M})$	$\frac{1}{1+3M}$	$\frac{1}{1+3M}$

Note.—Owing to symmetries in migration motifs (fig. 1), ${\overline{t}}_{22}={\overline{t}}_{33}$ and ${\overline{t}}_{12}={\overline{t}}_{13}$, and thus, ${\overline{F}}_{12}={\overline{F}}_{13}$.