The duplication of DNA sequences is a powerful determinant of genomic plasticity and is known to be one of the key factors responsible for evolution. Recent genomic sequence data demonstrate the abundance of duplicated genes in all surveyed organisms. Over the past years, experimental systems were adequately designed to explore the molecular mechanisms involved in their formation in haploid Saccharomyces cerevisiae strains. To obtain a more global and accurate view of the events leading to DNA sequence duplications, we have selected and characterized duplication occurrences in diploid S. cerevisiae cells. The molecular analysis showed that two other predominant ways lead to duplication in this context: formation of extra chimeric chromosomes and non-reciprocal translocation events. Moreover, we demonstrated that these two types of rearrangements are RAD52 independent and therefore that homologous recombination plays no part in their formation. Finally, our results show the multiplicity of mechanisms involved in duplication events and provide the first experimental evidence that these mechanisms might be ploidy dependent.
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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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