 Larger genomic clones ( 00-00 kbp ) were isolated and all contain sequences homologous to the BglII element . Analysis of these clones confirms that the BglII element is dispersed in the O officinalis genome . From one genomic clone , the sequences adjacent to the BglII element were subcloned and used as probes to demonstrate that the sequences flanking the BglII element are variable in different genomic clones and that some of them are also dispersed repetitive sequences . The genomic specificity of two of these dispersed repeats was evaluated and shown to be different from that of the initial BglII element . 