Genetics of differences in pheromonal hydrocarbons between Drosophila melanogaster and D. simulans.
Genetics of differences in pheromonal hydrocarbons between Drosophila melanogaster and D. simulans.
复制标题
果蝇和模拟果蝇之间信息素碳氢化合物差异的遗传学。
DOI：
10.1093/genetics/143.1.353
复制
发表时间：
1996
期刊：
影响因子：
3.3
通讯作者：
Coyne,JA
中科院分区：
文献类型：
--
作者：
Coyne,JA
雌性黑腹果蝇及其兄弟种。相似物具有非常不同的表皮烃，前者主要含7,11-七二烯，后者主要含7-三煤油。这种差异造成了物种间的生殖隔离。遗传分析表明，这种差异只映射到第三条染色体，其他三条染色体没有明显的影响。的哦。3号染色体左臂上的同时等位基因大部分是隐性的，允许我们使用d。melanogasterdeficiencies。这条臂上至少有四个不重叠的区域对碳氢化合物分布有很大的影响，这意味着这条臂上的几个基因对物种差异负有责任。由于染色体右臂也影响碳氢化合物的分布，因此至少有5个基因参与其中。第三条染色体对碳氢化合物的巨大影响也被报道在杂交中。同时及其近亲。暗指进化趋同或保留了祖先两性二态性的暗指。
Females ofDrosophila melanogasterand its sibling speciesD. simulanshave very different cuticular hydrocarbons, with the former bearing predominantly 7,11-heptacosadiene and the latter 7-tricosene. This difference contributes to reproductive isolation between the species. Genetic analysis shows that this difference maps to only the third chromosome, with the other three chromosomes having no apparent effect. TheD. simulansalleles on the left arm of chromosome 3 are largely recessive, allowing us to search for the relevant regions usingD. melanogasterdeficiencies. At least four nonoverlapping regions of this arm have large effects on the hydrocarbon profile, implying that several genes on this arm are responsible for the species difference. Because the right arm of chromosome3also affects the hydrocarbon profile, a minimum of five genes appear to be involved. The large effect of the third chromosome on hydrocarbons has also been reported in the hybridization betweenD. simulansand its closer relativeD. sechellia, implying either an evolutionaly convergence or the retention inD. sechlliaof an ancestral sexual dimorphism.