Table 3. Best population groupings for K = 2–6 for combined cytochrome b and D loop sequences and statistical results from SAMOVA.

Sampling location	K = 2	K = 3	K = 4	K = 5	K = 6
Western Cascades	A	A	C	E	E
North Coast	A	A	D	D	D
Central Coast	A	A	A	A	F
Western Sierra/San Joaquin Valley	A	A	A	A	A
Sacramento Valley	A	A	A	A	A
Eastern Sierra Nevada	B	B	B	B	B
Island foxes	A	C	C	C	C
Φ CT	0.21	0.22	0.20	0.23	0.26
P	0.13	0.05	0.01	0.02	0.05