キイロショウジョウバエ自然集団における動く遺伝子P要素の多型〔英文〕
スポンサーリンク
概要
- 論文の詳細を見る
Multicopied DNA sequences with homology to the complete 2.9kb P element from a P strain in the USA were detected in nine natural strains (two P strains, three Q strains, four M strains) of Drosophila melanogaste from Japan and one (M strain) from Korea. Southern hybridization patterns with pπ25.1, which contains the complete P element, showed highly polymorphic distribution of P elements in genomic DNAs from these strains. Nevertheless, all these natural strains including strong M strains had a similar number i.e., about 50 copies of P elements per genome. However, the number of central-portion-retaining P elements surveyed by hybridization to PstI fragment from pπ25.1 was not similar in these strains; it was 25 for a fairly strong P strain, 16 for a weak P strain and 16-14 for two Q strains, but only 1 to 9 for five strains (Q, weak M, strong M) from a small island (Chichi Jima) and 8 for a weak M strain from Korea. The origin of these polymorphic P elements is discussed in relation to the hypothesis that they are descendants produced by mutational degradation from similar primordial P elements with P factor activity, which were created recently to a similar number per genome.
- 日本遺伝学会の論文
著者
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Honjo Tasuku
Department Of Immunology And Genomic Medicine Graduate School Of Medicine Kyoto University
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Todo Takeshi
Department Of Medical Genetics Graduate School Of Medicine Osaka University
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SAKOYAMA Yasuhiko
Department of Genetics, Osaka University Medical School
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CHIGUSA Sadao
Laboratory of Genetics, Department of Biology, Ochanomizu University
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FUKUNAGA Akihiro
Laboratory of Biology, Osaka City University Medical School
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KONDO Sohei
Department of Fundamental Radiology, Osaka University Medical School
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Fukunaga Akihiro
Laboratory Of Biology
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KONDO SOHEI
Department of Fundamental Radiology, Faculty of Medicine Osaka University
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TODO Takeshi
Department of Fundamental Radiology, Osaka University Medical School
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藤堂 剛
Department of Fundamental Radiology, Osaka University Medical School
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HONJO Tasuku
Department of Genetics, Osaka University Medical School
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