Allozymes and nDNA markers show different levels of population differentiation in the mussel Mytilusedulis on British coasts

In order to test the hypothesis that natural selection can be operating on allozymes, six nuclear DNA markers were used to study population structure in six Mytilusedulis (Linnaeus, 1758) populations around the British Isles and the results compared with previous allozyme data from the same (two sites) or very close localities (the other four sites). Allozymes and nDNA markers show significant differentiation between populations at the P