A system is described in which spontaneous and chemically-induced mitotic and meiotic hyperploidy can be assayed in the same diploid culture of Saccharomyces cerevisiae. Monitoring gene dosage changes at two loci on chromosome VIII, the test utilizes a leaky temperature-sensitive allele arg4-8 and low level copper resistance conferred by the single copy allele cup1s. An extra chromosome VIII provides simultaneous increased dosage for both genes, resulting in colonies that are both prototrophic for arginine at 30 degrees C and copper resistant. During mitotic cell divisions in diploids, spontaneous chromosome VIII hyperploids (trisomes and tetrasomes) occur at a frequency of 6.4 x 10(-6) per viable cell. Among ascospores, the spontaneous chromosome VIII disome frequency is 5.5 x 10(-6) per viable spore. The tubulin-binding reagent methyl benzimidazol-2-yl carbamate (MBC) elicits enhanced levels of mitotic and meiotic aneuploidy relative to control levels. The system represents a novel model for examining chromosome behavior during mitosis and meiosis and provides a sensitive and quantifiable procedure for examining chemically induced aneuploidy.
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Evidence ID | Analyze ID | Gene/Complex | Systematic Name/Complex Accession | Qualifier | Gene Ontology Term ID | Gene Ontology Term | Aspect | Annotation Extension | Evidence | Method | Source | Assigned On | Reference |
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Evidence ID | Analyze ID | Gene | Gene Systematic Name | Phenotype | Experiment Type | Experiment Type Category | Mutant Information | Strain Background | Chemical | Details | Reference |
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Evidence ID | Analyze ID | Gene | Gene Systematic Name | Disease Ontology Term | Disease Ontology Term ID | Qualifier | Evidence | Method | Source | Assigned On | Reference |
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Evidence ID | Analyze ID | Regulator | Regulator Systematic Name | Target | Target Systematic Name | Direction | Regulation of | Happens During | Regulator Type | Direction | Regulation Of | Happens During | Method | Evidence | Strain Background | Reference |
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Site | Modification | Modifier | Source | Reference |
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Evidence ID | Analyze ID | Interactor | Interactor Systematic Name | Interactor | Interactor Systematic Name | Allele | Assay | Annotation | Action | Phenotype | SGA score | P-value | Source | Reference | Note |
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Evidence ID | Analyze ID | Interactor | Interactor Systematic Name | Interactor | Interactor Systematic Name | Assay | Annotation | Action | Modification | Source | Reference | Note |
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Complement ID | Locus ID | Gene | Species | Gene ID | Strain background | Direction | Details | Source | Reference |
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Evidence ID | Analyze ID | Dataset | Description | Keywords | Number of Conditions | Reference |
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