Genetic and fine structure analysis of unc-26(IV) and adjacent regions in Caenorhabditis elegans - PubMed (original) (raw)
. 1990 May;221(3):459-65.
doi: 10.1007/BF00259412.
Affiliations
- PMID: 2381425
- DOI: 10.1007/BF00259412
Genetic and fine structure analysis of unc-26(IV) and adjacent regions in Caenorhabditis elegans
D L Charest et al. Mol Gen Genet. 1990 May.
Abstract
The genetic organization of unc-26(IV) and adjacent regions was studied in Caenorhabditis elegans. We constructed a fine structure genetic map of unc-26(IV), a gene that affects locomotion and pharyngeal muscle movement but not muscle structure. Eleven alleles were positioned relative to each other recombinationally and were classified according to phenotypic severity. The unc-26 gene spans at least 0.026 map units, which is exceptionally large for a C. elegans gene. All but one allele, e205, are amorphic alleles. Interestingly, e205 is hypomorphic but also suppressible by the amber suppressor sup-7. Nineteen lethal mutations in the unc-26 region were isolated and characterized. The unc-26 region is subdivided into four zones by five deficiency breakpoints. These mutations fall into 15 complementation groups. The stages of development affected by these mutations were determined.
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