Long-term patterns of genomic P element content and P-M characteristics of Drosophila melanogaster in eastern Australia
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概要
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A latitudinal cline in characteristics associated with the P DNA transposable element is well known in eastern Australian populations of Drosophila melanogaster. In order to survey the long-term patterns of P-M system characteristics and genomic P element content, we established 292 isofemale lines from 54 localities in 1996–1997 and evaluated them for gonadal dysgenesis (GD) sterility and the ratio of KP to full-size P elements (KP/FP ratio). The results were compared to those from collections made in 1983–1986 and 1991–1994. Over 10–14 years, 1) the cross A GD scores of the northern-middle populations declined dramatically; 2) the clinal pattern of the cross A* GD scores did not change; 3) the latitudinal pattern of the KP/FP ratio did not change. The results suggest that only a few P elements determine P-M characteristics and that there has been selection for genomes with fewer active P elements, but not for a great change in proportions of size classes.
- 日本遺伝学会の論文
- 2007-12-25
著者
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OGURA Keiji
Department of Gastroenterology, University of Tokyo
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Woodruff R.
Department Of Biological Sciences Bowling Green State University
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ITOH Masanobu
Department of Applied Biology, Kyoto Institute of Technology
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BOUSSY Ian
Department of Biology, Loyola University of Chicago
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Ogura Keiji
Department Of Biology Loyola University Of Chicago
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Boussy Ian
Department Of Biology Loyola University Of Chicago
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Boussy Ian
Department Of Biology Loyola University
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Itoh Masanobu
Department Of Applied Biology Faculty Of Textile Science Kyoto Institute Of Technology
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Ogura Keiji
Department of Applied Biology, Kyoto Institute of Technology
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