[Insertion of the Doc mobile element into Drosophila satellite DNA].

Eight plasmids containing the satellite DNA of Drosophila melanogaster, density of 1,688 g/cm3, and DNA neighbouring sequences were selected from gene cosmid library. The Doc mobile element appeared to be present in three cosmids, together with the satellite DNA. Two Doc copies in the opposite orientations are present in one of these cosmids. One monomer of the satellite DNA is located between their 3'-ends, which indicates selectivity of the mobile element insertion into the monomer of this satellite DNA.