Linked Life Data

17246109

Source:http://linkedlifedata.com/resource/pubmed/id/17246109

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SubjectPredicateObjectContext
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pubmed-article:17246109pubmed:dateCreated2010-6-28lld:pubmed
pubmed-article:17246109pubmed:abstractTextWe have analyzed the viability of different types of X chromosomes in homozygous clones of female germ cells. The chromosomes carried viable mutations, single-cistron zygotic-lethal and semi-lethal mutations, or small (about six chromosome band) deletions. Homozygous germ-line clones were produced by recombination in females heterozygous for an X-linked, dominant, agametic female sterile.All the zygotic-viable mutants are also viable in germ cells. Of 16 deletions tested (uncovering a total of 93 bands) only 2 (of 4 and 5 bands) are germ-cell viable. Mutations in 15 lethal complementation groups in the zeste-white region were tested. When known, the most extreme alleles at each locus were tested. Only in five loci (33%) were the mutants viable in the germ line. Similar studies of the same deletions and point-mutant lethals in epidermal cells show that 42% of the bands and 77% of the lethal alleles are viable. Thus, germ-line cells have more stringent cell-autonomous genetic requirements than do epidermal cells.The eggs recovered from clones of three of the germ-cell viable zw mutations gave embryos arrested early in embryogenesis, although genotypically identical embryos derived from heterozygous oogonia die as larvae or even hatch as adult escapers. For two genes, homozygosis of the mutations tested also caused embryonic arrest of heterozygous female embryos, and in one case, the eggs did not develop at all. Germ-line clones of one quite leaky mutation gave eggs that were indistinguishable from normal. The abundance of genes whose products are required for oogenesis, whose products are required in the oocyte, and whose activity is required during zygotic development is discussed.lld:pubmed
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pubmed-article:17246109pubmed:languageenglld:pubmed
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pubmed-article:17246109pubmed:statusPubMed-not-MEDLINElld:pubmed
pubmed-article:17246109pubmed:monthFeblld:pubmed
pubmed-article:17246109pubmed:issn0016-6731lld:pubmed
pubmed-article:17246109pubmed:authorpubmed-author:Garcia-Bellid...lld:pubmed
pubmed-article:17246109pubmed:authorpubmed-author:RobbinsL GLGlld:pubmed
pubmed-article:17246109pubmed:issnTypePrintlld:pubmed
pubmed-article:17246109pubmed:volume103lld:pubmed
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pubmed-article:17246109pubmed:authorsCompleteYlld:pubmed
pubmed-article:17246109pubmed:pagination235-47lld:pubmed
pubmed-article:17246109pubmed:dateRevised2010-9-14lld:pubmed
pubmed-article:17246109pubmed:year1983lld:pubmed
pubmed-article:17246109pubmed:articleTitleViability of Female Germ-Line Cells Homozygous for Zygotic Lethals in DROSOPHILA MELANOGASTER.lld:pubmed
pubmed-article:17246109pubmed:affiliationCentro de Biologia Molecular, Consejo Superior de Investigaciones Cientificas, Universidad Autónoma de Madrid, Canto Blanco, Madrid-34, Spain.lld:pubmed
pubmed-article:17246109pubmed:publicationTypeJournal Articlelld:pubmed
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