Extended Data Fig. 10: Short homozygous blocks interrupting the heterozygous region suppress local crossover stimulation.

a, Interhomolog SNP distribution in the M(ws3,lg1) × Ku(R1) cross along chromosome 2. Gray vertical bars represent SNP density per 10 kb, with the burgundy trend line showing SNP density per 1 Mb. Gray horizontal bars beneath the graph indicate estimated heterozygous regions based on SNPs. Colored lines mark the positions of the ws3-lg1 interval used to measure Rf. The navy blue square on the x-axis shows the centromere location. The inset offers a close-up of the interval, with the SNP density plots below partially trimmed. b, As in (a), but for the M(lg1,gl2) × Ku(R1) cross.