title: Interspersion of short repetitive sequences studied in cloned sea urchin DNA fragments.
abstract: The length and spacing of repetitive sequence elements were studied in several cloned sea urchin DNA fragments. Sequence organization in these fragments was found to be of the short interspersed form expected for sea urchin DNA, and for one clone the evidence shows that nearby repeats do not belong to the same repetitive sequence family.
mesh_terms: D000818:Animals; D001483:Base Sequence; D004274:DNA, Recombinant / Q000032:analysis*; D008854:Microscopy, Electron; D008970:Molecular Weight; D010957:Plasmids; D012617:Sea Urchins / Q000032:analysis*
chemical_list: D004274:DNA, Recombinant