Genomic analysis of adaptation in Drosophila

自20世纪60年代以来，对适应的探索一直是进化生物学研究的重点 达尔文出版了《物种起源》。尽管有着悠久的调查历史， 适应的遗传基础只是最近才得到全面的研究， 主要是因为直到最近，必要的遗传和基因组技术 不可用.高迁移率物种适应的一个标志是遗传 同一物种的种群间的差异。在这种情况下， 不同的环境足以克服基因的排斥力， 流拟议的工作旨在探索基因组学的适应沿着纬度 在遗传模型系统中，黑腹果蝇（Drosophila melanogaster）。工作将使用 微阵列分析，DNA测序和遗传学，以描述基因的变化（和 相关的表型）受空间变异选择的影响。黑腹菌

The exploration of adaptation has been a keystone of evolutionary biology research since Darwin published Origin of Species. Despite this long history of investigation, the genetic basis of adaptation has only recently been studied in a comprehensive manner, primarily because until recently, the necessary genetic and genomic technologies were unavailable. One signature of adaptation in species with high migration rates is genetic differentiation between populations of the same species. In such cases, local selection in different environments is strong enough to overcome the homogenizing force of gene flow. The proposed work seeks to explore the genomics of adaptation along latitudinal clines in the genetic model system, Drosophila melanogaster. The work will use microarray analysis, DNA sequencing, and genetics, to describe variation in genes (and the associated phenotypes) influenced by spatially varying selection in D. melanogaster.