Table 2. Genetic distances among breed groups.

	CRE	SP	PT	BR	EU	ZEB
CRE		0.016	0.018	0.033	0.023	0.095
SP	15.80	–	0.013	0.036	0.020	0.135
PT	13.78	18.51	–	0.041	0.027	0.143
BR	7.43	6.66	5.79	–	0.032	0.159
EU	10.43	11.96	9.12	7.57	–	0.156
ZEB	2.38	1.60	1.50	1.33	1.35	–

Genetic distances estimated by Weir and Cockerham <theta> (above diagonal) and corresponding number of migrants (below diagonal). Breed groups: CRE – Creole; SP – Spanish; PT – Portuguese; BR – British; EU – Continental European; ZEB –Zebu. See Table 1 for the definition of breeds included in each group.