Fig. 2.

Parental mitochondrial genomes of the cybrid. Linearized, scale maps of the 430,597 and 501,401 bp mitochondrial genomes of Nicotiana tabacum (a) and Hyoscyamus niger (b), respectively. The wide violet (a) and green (b) shadings indicate regions present in the other mitochondrial genome, i.e., these represent the 203 kb of DNA shared between the two genomes. Shown are all full-length genes, repeats ≥1 kb in length (purple boxes labeled ‘R’, followed by the repeat lengths in kb), and chloroplast-derived regions >400 bp in length (green boxes labeled ‘cp-like’). Genes marked on different sides of the central black vertical lines are transcribed from opposite strands of the genome.