Speciation Genetics in Tribolium

谷盗物种形成遗传学

• 批准号: 9629716
• 负责人: Michael Wade
• 金额: $ 14.3万
• 依托单位: University of Chicago
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 1996
• 资助国家: 美国
• 起止时间: 1996-10-01 至 1998-10-26
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9629716&HistoricalAwards=false
• 关键词: Speciation; Genetics; Tribolium

9629716 Wade Speciation, the splitting of one species into two, is a basic process in biology. It occurs when two populations become genetically different enough that they cannot produce fertile offspring. This project studies the genetic basis for this reproductive isolation in two species of flour beetles, Tribolium castaneum and T. freemani, which produce sterile offspring when crossed. In crosses among different strains of these species, there is variation in the proportion of offspring that are female and the frequency of deformed males. Genetic crosses and selection experiments will be used to investigate the genetic basis for these differences. These experiments address how selective forces and genetic variation within a species result in enough divergence for reproductive isolation and speciation. Studying the genetic basis for speciation is fundamental for understanding the generation of species biodiversity.

9629716 Wade 物种形成，即一个物种分裂为两个，是生物学的一个基本过程。 当两个种群的基因差异足够大以至于无法产生可育后代时，就会发生这种情况。 该项目研究了两种面粉甲虫（赤拟谷盗和弗里曼谷盗）这种生殖隔离的遗传基础，这两种面粉甲虫在杂交时会产生不育的后代。 在这些物种的不同品系之间的杂交中，雌性后代的比例和畸形雄性的频率存在差异。 将使用遗传杂交和选择实验来研究这些差异的遗传基础。 这些实验探讨了物种内的选择力和遗传变异如何导致生殖隔离和物种形成的足够分歧。 研究物种形成的遗传基础对于理解物种生物多样性的产生至关重要。