Fig. 3.

Comparison of recombination rates and CO interference between wild type and cdka;1^DBD for all five chromosomes. A blue horizontal bar depicts each chromosome and an indentation indicates the centromere position. For each chromosome, recombination rates are shown for the wild type (blue) and cdka;1^DBD (red) in the lower graph as recombination rate (y axis, cM per Mb) for 34 intervals along the physical chromosome (precise marker positions are given in SI Appendix, Fig. S4). Intervals that significantly differ in recombination rates are indicated in orange (χ² test; see legend). Note that recombination in cdka;1^DBD is lower in all regions in which recombination rates significantly differ, except for the top of chromosome 4. Significant differences are only detected in regions adjacent to centromeres. The upper graph shows interference strength (Interference = 1 − c.o.c.) for 22 marker intervals (indicated by dashed vertical lines). A dot indicates interference strength between the intervals to the left and right of it. Note that some of the 34 smaller intervals were merged for interference calculations (see Methods and SI Appendix, Fig. S4).