Comparison of the RPP7 region in three haplotypes from A. thaliana and A. lyrata. A, Dot plots comparing two A. thaliana alleles. B, Annotation. The closest Col-0 homologs of two Cvi-0 genes in the center of the cluster are indicated in gray. NB-LRR genes are in red. Numbers indicate the sizes of gaps in kb (not to scale).