| mtdna diversity among four portuguese autochthonous dog breeds: a fine-scale characterisation. | the picture of dog mtdna diversity, as obtained from geographically wide samplings but from a small number of individuals per region or breed, has revealed weak geographic correlation and high degree of haplotype sharing between very distant breeds. we aimed at a more detailed picture through extensive sampling (n = 143) of four portuguese autochthonous breeds - castro laboreiro dog, serra da estrela mountain dog, portuguese sheepdog and azores cattle dog-and comparatively reanalysing published ... | 2005 | 15972107 |