Linkage region. The S. pratensis genomes contain a 20 kbp region in which linkage equilibrium has broken down, suggesting a decrease in recombination between the genomes of Ch24, Will26, Will23 and those of Ch2, IAF-45-CD. The predicted amino acid sequences affected by an indel at the center of this region is shown in panel A. The amino acid sequences of Will26 and Will23 are identical in this region and differ from Ch24 by only one residue (only Ch24 is shown in panel A).The affected amino acid sequence is surrounded by a box. The location of the indel is indicated by a rectangle and red dots in panel B. Informative SNPs are indicated on each genome segment by an ‘X’ and colored lines indicate pairs of genomes which share each SNP. Stop codons are indicated with an asterisk in panel A.