Excision of one of two defective P elements as the cause of alternate mutational events (sn+ and sne) of the singed bristle allele snw in Drosophila melanogaster.
スポンサーリンク
概要
- 論文の詳細を見る
The X-linked singed locus is concerned with the bristle phenotype and female sterility, and is known as a hot spot of P element insertion. A moderate allele of singed, singed-weak (snw) (Engels, 1979; 1984) is inserted with P elements. It is used as an index of P element activity, since it mutates at a high frequency to either a more extreme allele, singed-extreme (sne), or to a phenotype that is equivalent to the wild type (sn+) when an autonomous P element exists. We show here that snw is inserted with two defective P elements in reverse orientation, and the two alternate mutational events (sn+ and sne) are caused by the excision of one or the other of the P elements present in the singed gene. It is interesting that sn+ and sne are inserted with a single P element in the same position, but show very different phenotypes. The insertional sites of P elements in the singed locus possibly contain an unidentified repetitive sequence, which is repeated dozens of times per haploid genome of the wild-type strain Canton-S.
- 日本遺伝学会の論文
著者
-
Nitasaka Eiji
Laboratory Of Molecular Population Genetics Department Of Molecular Biology Faculty Of Medicine Kyus
-
Yamazaki Tsuneyuki
Laboratory Of Molecular Population Genetics Department Of Molecular Biology Faculty Of Medicine Kyus
-
NITASAKA Eiji
Laboratory of Population Genetics, Department of Biology, Faculty of Science, Kyushu University
関連論文
- Isozyme polymorphism and genetic structure of a liverwort Conocephalum conicum in natural populations of Japan
- 日本のキイロショウジョウバエ自然集団におけるPおよびQ系統からのP因子のクロ-ニング〔英文〕
- 日本におけるキイロショウジョウバエ自然集団の遺伝解析-1-蛋白質多型,致死遺伝子,不妊遺伝子,逆位多型と連鎖不平衡〔英文〕
- アミラ-ゼ誘発能に関する遺伝的変異と自然選択〔英文〕
- Phylogenetic relationships among taxa of the liverwort Conocephalum conicum (Conocephalaceae) revealed by psbA sequence
- Nonconcerted evolution of histone 3 genes in a liverwort, Conocephalum conicum
- Genetic analysis of natural populations of Drosophila melanogaster in Japan. V Genetic variabilities of amylase activities in different developmental stages and theil relation to fitness.:V. Genetic variabilities of amylase activities in different develop
- Excision of one of two defective P elements as the cause of alternate mutational events (sn+ and sne) of the singed bristle allele snw in Drosophila melanogaster.