Meiotic recombination was analyzed between two twelve-copy arrays of a gene amplification at the CUP1 locus of Saccharomyces cerevisiae. Utilizing Southern analysis to identify spores with non-parental repeat arrays, we find that approximately 11% of a sample with 202 unselected tetrads possess at least one nonparental spore array. Both reciprocal and non-reciprocal changes are observed. The data suggest a model in which frequent mispairing among identical copies of the 2.0 kb repeat unit leads to the formation of unpaired loops containing integral numbers of repeat units. In this model, conversions involving the loops lead to non-reciprocal changes in arrays: about half are associated with reciprocal exchange, and net increases in repeat unit numbers occur about as frequently as net decreases. Thus, the known properties of gene conversion can account for all the segregations we observe.
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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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