Fig. 3. DNA insertions and deletions in orthologous VRN2 regions from the A^m genome of T. monococcum (AY485644) and the A genome of durum wheat variety Langdon (new sequence EF540321). These regions diverged 1.1 ± 0.1 My ago. The red lines connect orthologous regions (>96% identical). Arrows represent genes: red, orthologous; blue, ortholog absent; and violet, pseudogene. Rectangles represent repetitive elements in their actual nested structure: red, orthologous; blue, insertions after divergence; green, deletion in the opposite genome (yellow region); and black, not determined. Only 31% of the orthologous intergenic regions have not been replaced. [See SOM text for details.] [View Larger Version of this Image (96K JPEG file)]

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