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- Sun Dong-Sang
- Department of Biology, Faculty of Science, Kyushu University
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- MUKAI Terumi
- Department of Biology, Faculty of Science, Kyushu University
書誌事項
- タイトル別名
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- Genetic variability due to mutation-selection balance in a northern population of Drosophila melanogaster in Japan.
- キイロショウジョウバエ ノ ニホン ホッポウ シュウダン ニ オケル トツゼン
この論文をさがす
抄録
Two hundred and eighty second chromosomes were extracted in the native cytoplasm from the Akayu population, one of the northern populations of D. melanogaster in Japan, and various population-genetic parameters such as effective size of the population (Ne≅5000), frequency of lethal-carrying second chromosomes (Q=0.23), allelism rate of lethol second chromosomes (Ic=0.0137), homozygous detrimental and lethal loads (D=0.235; L=0.263), average degree of dominance of mildly deleterious genes (hE≅O.27), and components of genetic variance for viability-additive (σA2) and dominance (σD2)- (σA2=0.0023; σD2=0.0009) were estimated. The analysis of these data strongly indicates that, in this population, mutation-selection balance is the mechanism for the maintenance of genetic variability of viability. Furthermore, these estimates were compared with those of the Aomori population, whose second chromosomes were extracted in the M type cytoplasm. Since the estimates of the above parameters of both populations were very similar to each other, it was concluded that mutations were not induced due to the P-M type hybrid dysgenesis in the process of extracting the chromosomes. Thus, both the Aomori and Akayu populations can be considered to be a typical northern population in Japan where genetic variabilities of viability are maintained by the balance between mutation and selection pressures.
収録刊行物
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- 遺伝学雑誌
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遺伝学雑誌 62 (2), 95-107, 1987
日本遺伝学会
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キーワード
詳細情報 詳細情報について
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- CRID
- 1390282680420495232
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- NII論文ID
- 130000060731
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- NII書誌ID
- AA00690924
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- ISSN
- 18805787
- 0021504X
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- NDL書誌ID
- 3134123
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- 本文言語コード
- en
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- データソース種別
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- JaLC
- NDL
- Crossref
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- 抄録ライセンスフラグ
- 使用不可