Reference: Spector LM and Fogel S (1992) Mitotic hyperploidy for chromosomes VIII and III in Saccharomyces cerevisiae. Curr Genet 21(4-5):309-18

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Abstract


The arg4-8 and cup1s markers comprise a copy-number-dependent signal device in the yeast Saccharomyces cerevisiae. These alleles permit reliable discrimination between euploid and disomic haploids as well as between euploid and trisomic diploids. To investigate and compare inherent inter-chromosomal differences as regards propensity for hyperploidy, we transplaced arg4-8 and cup1s by deleting them from chromosome VIII and then re-introducing them at the leu2 locus on chromosome III. The rate of chromosome gain was significantly greater for the chromosome III construct compared to the native chromosome VIII, in both diploid and haploid strains. In addition, more coincident aneuploidy for other chromosomes was found among chromosome VIII hyperploids compared to chromosome III hyperploids.

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Journal Article
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Spector LM, Fogel S
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