Table 2

Cyto-nuclear association

cluster α

hybrid

cluster β

Lineage 1

80

0

1

Lineage 2

22

7

82

Results of the assignments based on the nuclear genotypes into two clusters (α and β). Lineage 1 and 2 refer to the mitochondrial group. The rxc exact contingency table test on independence was highly significant (p < 0.001).

Dépraz et al. BMC Evolutionary Biology 2009 9:171   doi:10.1186/1471-2148-9-171