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rdf:type | |
lifeskim:mentions | |
pubmed:dateCreated |
1988-12-12
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pubmed:abstractText |
Most nematodes have XO male/XX female sex determination. C. elegans is anomalous, having XX hermaphrodites rather than females. The hermaphrodite condition appears to result from the modification of a basic male/female sex-determination system, which permits both spermatogenesis and oogenesis to occur within a female soma. This modification is achieved by a germ-line-specific control acting at one step in a cascade of autosomal regulatory genes, which respond to X-chromosome dosage and direct male, female, or hermaphrodite development. Mutations of one of these genes can be used to construct artificial strains with ZZ male/WZ female sex determination. Primary sex determination normally depends on the ratio of X chromosomes to autosomes, as in Drosophila, and there appear to be multiple sites on the X chromosome that contribute to this ratio. Also, as in Drosophila, X-chromosome expression is compensated to equalize gene activity in XX and XO animals. Interactions between dosage compensation and sex determination are described and discussed.
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pubmed:language |
eng
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pubmed:journal | |
pubmed:citationSubset |
IM
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pubmed:status |
MEDLINE
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pubmed:issn |
0950-1991
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pubmed:author | |
pubmed:issnType |
Print
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pubmed:volume |
101 Suppl
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pubmed:owner |
NLM
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pubmed:authorsComplete |
Y
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pubmed:pagination |
5-16
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pubmed:dateRevised |
2010-11-18
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pubmed:meshHeading |
pubmed-meshheading:3503722-Animals,
pubmed-meshheading:3503722-Caenorhabditis,
pubmed-meshheading:3503722-Chromosome Mapping,
pubmed-meshheading:3503722-Disorders of Sex Development,
pubmed-meshheading:3503722-Dosage Compensation, Genetic,
pubmed-meshheading:3503722-Female,
pubmed-meshheading:3503722-Male,
pubmed-meshheading:3503722-Mutation,
pubmed-meshheading:3503722-Phenotype,
pubmed-meshheading:3503722-Polyploidy,
pubmed-meshheading:3503722-Sex Determination Analysis,
pubmed-meshheading:3503722-X Chromosome
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pubmed:year |
1987
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pubmed:articleTitle |
Primary sex determination in the nematode C. elegans.
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pubmed:affiliation |
MRC Laboratory of Molecular Biology, Cambridge, UK.
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pubmed:publicationType |
Journal Article
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