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Variation in recombination rates along chromosomes I and IX of clementine. The x-axis displays the physical position in megabases (Mb) along each chromosome, and the y-axis represents the ratio of genetic distance to physical distance (cM/Mb). The bars beneath the x-axis indicate the approximate locations of the centromeres (CI). *These data have been calculated from up and down intervals (no marker on the genetic map on the considered genomic segment).
