rDNA copy number varies between strains. The number of copies of the 18S–28S repeat and the 5S repeat is illustrated as estimated by the fraction of reads mapping to the regions. Ninety-two percent of the strains have between 55 and 130 copies of the 18S–28S repeat and 93% have between 130 and 210 copies of the 5S repeat, with extreme outliers for both regions (33–245 and 39–438, respectively).