Figure 6. Deduced restriction sites location in nuclear O. tuberosa rDNA unit. Diagram is based on the results showed in Figure 2a and in lines corresponding to O. tuberosa on Figure 2b, Figure 3, Figure 4 and Figure 5. Abbreviations on the figure denote the following: 18S: 18S rDNA; ITS: internal transcribed spacer; 25S: 25S rRNA coding region; IGS: intergenic spacer. EcoRI (), BamHI () sites.