| insertion polymorphism of retrotransposable elements in populations of the insular, endemic species drosophila madeirensis. | the insertion site numbers of the retrotransposable elements (te) 412, gypsy and bilbo were determined in individuals of five distinct natural populations of the endemic species drosophila madeirensis from the island of madeira. the te distributions were compared to those of the paleartic, widespread and phylogenetically closely related species, d. subobscura. in situ hybridization and southern blots showed that in d. madeirensis the number of insertion sites ranged between 10 and 15, three and ... | 2002 | 11918774 |