Chiasma analyses of the parasite flukes, Schistosoma and Paragonimus(Trematoda), by using the chiasma distribution graph

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概要

• 論文の詳細を見る

• Chiasma frequency and chiasma distribution pattern of three parasite flukes, Schistosoma mansoni (n=8), S. japonicum (n=8), and Paragonimus ohirai (n=11) were investigated by using the chiasma distribution graph. It was revealed that there is a minimum value of interference distance between two interstitial chiasmata in each bivalent (1.8% of the total bivalent length), but frequency distributions of interstitial chiasmata are random and almost uniform except the centromere and telomere regions in which chiasma formation is suppressed. As no chiasma terminalization was detected, the so-called terminal chiasma were best interpreted by an achiasmatic terminal association resulting from the telomerenuclear membrane association. The mean chiasma frequency per cell estimated from interstitial chiasmata is 15.3 in S. mansoni and P. ohirai, but very low (3.0) in S. japonicum. A genetic mechanism controlling the level of chiasma frequency was discussed with reference to the results in mammals.

• 日本遺伝学会の論文

著者

• Aoki Yoshiki

  Department of Parasitology, Institute of Tropical Medicine, Nagasaki University

• Hirai Hirohisa

  Primate Research Institute, Kyoto University

• IMAI Hirotami

  National Institute of Genetics

• Aoki Yoshiki

  Department Of Parasitology Institute For Tropical Medicine Nagasaki University

• Imai H

  National Inst. Genetics Shizuoka‐ken Jpn

• Tanaka Manami

  Institute Of Basic Medical Sciences University Of Tsukuba

• Hirai Hirohisa

  Primate Research Institute Kyoto University

• Hirai Hirohisa

  Molecular Biology Section Department Of Cellular And Molecular Biology Primate Research Institute Ky

• Hirai Hirohisa

  Department Of Population Genetics Primate Research Institute Kyoto University

• Hirai Hirohisa

  Department Of Cellular And Molecular Biology Primate Research Institute Kyoto University

• Hirai Hirohisa

  Prime Res. Ins. Kyoto Univ.

• Hirohisa Hirai

  Primate Research Institute Kyoto University

• Hirai Hirohisa

  Kyoto University

• Hirata Mizuki

  Department Of Parasitology Kurume University School Of Medicine

• Hirata Mizuki

  Department Of Parasitology Faculty Of Medicine Kurume University

• Hirai H

  Primate Research Institute Kyoto University

• AOKI Yoshiki

  Department of Agricultural Chemistry, Gifu University

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