Dissertation Research: Genetics of Interspecific Sperm Precedence in Drosophila

论文研究：果蝇种间精子优先的遗传学

• 批准号: 0228831
• 负责人: David Begun
• 金额: $ 0.37万
• 依托单位: University of California-Davis
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2001
• 资助国家: 美国
• 起止时间: 2001-08-31 至 2002-09-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0228831&HistoricalAwards=false
• 关键词: Dissertation; Research; Genetics; Interspecific; Sperm

0073245BegunSpeciation is the process whereby a single reproductively unified group of organisms diverges into two such groups. Little is known about the types of genes that generate reproductive isolation. The experiments outlined in this proposal aim to identify candidate genes contributing to reproductive isolation between two fruit fly species, Drososphila simulans and D. mauritiana. Although these species can hybridize, postmating reproductive isolation still exists due to the preferential fertilization of eggs by sperm of conspecific males. The chromosomal regions of genes that influence both male and female components of this sperm competition trait will be localized through genetic mapping. By pondering a mechanism to explain the origin of species, Charles Darwin elucidated the theory of evolution via natural selection. Much progress in the field of evolutionary biology has been made since the introduction of this seminal theory. However, the process of speciation is still a mystery, particularly at the genetic level. The results of this study will help identify "speciation genes" that can be subjected to various analyses, and ultimately contribute to a general understanding of mechanisms of speciation.

开始物种形成是一个单一的生殖统一的生物群体分化成两个这样的群体的过程。 对于产生生殖隔离的基因类型知之甚少。 本实验旨在确定两种果蝇（Drososphila simulans和D.毛里求斯。 虽然这些物种可以杂交，交配后的生殖隔离仍然存在，由于同种男性的精子受精卵的优先。 影响这种精子竞争性状的男性和女性成分的基因的染色体区域将通过遗传图谱定位。 通过思考一种解释物种起源的机制，查尔斯达尔文通过自然选择阐明了进化论。 自从这一开创性的理论提出以来，进化生物学领域已经取得了很大的进展。 然而，物种形成的过程仍然是一个谜，特别是在基因水平上。 这项研究的结果将有助于确定“物种形成基因”，可以进行各种分析，并最终有助于对物种形成机制的一般理解。