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PredicateObject
rdf:type
lifeskim:mentions
pubmed:dateCreated
1988-12-12
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.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:status
MEDLINE
pubmed:issn
0950-1991
pubmed:author
pubmed:issnType
Print
pubmed:volume
101 Suppl
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
5-16
pubmed:dateRevised
2010-11-18
pubmed:meshHeading
pubmed:year
1987
pubmed:articleTitle
Primary sex determination in the nematode C. elegans.
pubmed:affiliation
MRC Laboratory of Molecular Biology, Cambridge, UK.
pubmed:publicationType
Journal Article