abnormal rDNA copy number increased rDNA copy number during vegetative growth 2020-11-10T14:03:47Z increased copy number of rDNA repeats increased rDNA copy number during mitotic cell cycle A physical cellular phenotype observed in the vegetative growth phase of the life cycle in which the number of ribosomal DNA (rDNA) repeats present in the rDNA arrays on chromosome III is significantly greater than the range in wild type cells. increased copy number of rDNA repeats during mitotic cell cycle FYPO:0007513 midori