population genetic structure and colonization sequence of drosophila subobscura in the canaries and madeira atlantic islands as inferred by autosomal, sex-linked and mtdna traits. | the genetic structure in atlantic islands and continental populations of drosophila subobscura has been studied using autosomal and sex-linked allozymes and mitochondrial dna (mtdna) haplotypes. from the data it is deduced that whereas the canary islands have long been isolated, the neighboring island of madeira has been subjected to continuous migration from the mainland. in addition, sex-linked allozymes and mtdna data show a large divergence between the geologically younger western islands of ... | 1997 | 9099006 |