We have studied zygotic cytoplasmic mixing in two neutral petite by grande matings. Cytoplasmic mixing in zygotes and zygotic buds was followed histochemically and genetically. Both techniques showed that in most zygotes rapid cytoplasmic mixing occurred after early zygote formation and before first bud completion. The progeny mitochondrial genotypes produced from each cross were compatible with a model assuming random segregation of petite and grande inputs between the zygote and its first bud.While both crosses produced only grande zygotic colonies and grande diploid progeny when assayed by classical genetic methods, a class of events producing petite zygotes, retaining petite mitochondrial DNA, with grande first diploid buds was discovered. The results show that the expression of neutrality in our strains requires efficient cytoplasmic mixing during zygote maturation. The results suggest that the expression of mitochondrial genome neutrality requires competition or interaction between petite and grande parental mitochondrial DNA molecules. The possible nature of these phenomena is discussed.
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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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